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  • 物理存储结构


    一:物理存储结构简介

    image

    • 数据文件和临时文件

    image

    • 查看临时文件信息:

    SYS@orcl>  select name  from v$tempfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/temp.dbf
    /u01/app/oracle/oradata/orcl/temp_01.dbf
    /u01/app/oracle/oradata/orcl/temp_1.dbf
    /u01/app/oracle/oradata/orcl/temp_2.dbf
    /home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_
    6.dbf
    
    /u01/app/oracle/oradata/orcl/tbs_example .dbf
    /u01/app/oracle/oradata/orcl/tp1.dbf
    /u01/app/oracle/oradata/orcl/tp2.dbf
    
    8 rows selected.
    
    SYS@orcl>
    • 查看 数据库文件信息

    SYS@orcl> select name from v$datafile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/system01.dbf
    /u01/app/oracle/oradata/orcl/sysaux01.dbf
    /u01/app/oracle/oradata/orcl/undotbs01.dbf
    /u01/app/oracle/oradata/orcl/users01.dbf
    /u01/app/oracle/oradata/orcl/example01.dbf
    /u01/app/oracle/oradata/orcl/datafile1.dbf
    /u01/app/oracle/oradata/orcl/ts1.dbf
    /u01/app/oracle/oradata/orcl/datafile3.dbf
    /u01/app/oracle/oradata/orcl/datafile4.dbf
    /u01/app/oracle/oradata/orcl/datafile5.dbf
    /u01/app/oracle/oradata/orcl/datafilebig_1.dfb
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/ts2.dbf
    /u01/app/oracle/oradata/orcl/ts3.dbf
    /u01/app/oracle/oradata/orcl/tbsp_1.dbf
    
    14 rows selected.


    • 控制文件

    image

    • 查看控制文件信息:

    SYS@orcl> select name from v$controlfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/control01.ctl
    /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    
    • 联机重做日志文件

         image

    • 查看日志文件信息

    SYS@orcl> set linesize 300;
    SYS@orcl> col member for a250;
    SYS@orcl> select member from v$logfile;
    
    MEMBER
    ----------------------------------------------------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/redo03.log
    /u01/app/oracle/oradata/orcl/redo02.log
    /u01/app/oracle/oradata/orcl/redo01.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
    
    6 rows selected.
    
    SYS@orcl>

    image





    二:数据文件的概述

    image


    1:使用数据文件

    image




    2:永久和临时数据文件

    image



    3:数据文件结构

    image

    image

    三:控制文件的概述

    image

    1:使用控制文件

    image


    image







    2:多个控制文件

    image

    介质恢复前提:是有备份

    image



    3:备份控制文件

    image

     注:在上述操作之后,都要对控制文件进行备份



    4:控制文件结构

    image


    控制文件中包含以下类型的记录:

    • 循环重用记录

       image

    SYS@orcl> show parameter control
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    control_file_record_keep_time        integer     7
    control_files                        string      /u01/app/oracle/oradata/orcl/c
                                                     ontrol01.ctl, /u01/app/oracle/
                                                     fast_recovery_area/orcl/contro
                                                     l02.ctl
    control_management_pack_access       string      DIAGNOSTIC+TUNING
    SYS@orcl>


    • 非循环重用记录

       image




    实验:

        imageimage

         imageimage

       image

      image

    image


              1:Strings 查看控制文件信息:

    [oracle@localhost ~]$ sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Thu May 3 19:58:47 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    
    SYS@orcl> show parameter control
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    control_file_record_keep_time        integer     7
    control_files                        string      /u01/app/oracle/oradata/orcl/c
                                                     ontrol01.ctl, /u01/app/oracle/
                                                     fast_recovery_area/orcl/contro
                                                     l02.ctl
    control_management_pack_access       string      DIAGNOSTIC+TUNING
    SYS@orcl> quit
    Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    [oracle@localhost ~]$ strings /u01/app/oracle/oradata/orcl/control01.ctl
    }|{z
    VORCL
    'c7W0b
    'c7ORCL
    v6n-
    'c7T
    'c7ORCL
    v6n-
    'c7T
    orcl
    orcl
    {6n-
    1(c7
    1(c7
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    {6n-
    1(c7
    1(c7
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    /u01/app/oracle/oradata/orcl/redo03.log
    /u01/app/oracle/oradata/orcl/redo02.log
    /u01/app/oracle/oradata/orcl/redo01.log
    /u01/app/oracle/oradata/orcl/users01.dbf
    /u01/app/oracle/oradata/orcl/undotbs01.dbf
    /u01/app/oracle/oradata/orcl/sysaux01.dbf
    /u01/app/oracle/oradata/orcl/system01.dbf
    /u01/app/oracle/oradata/orcl/temp.dbf
    /u01/app/oracle/oradata/orcl/example01.dbf
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
    /u01/app/oracle/oradata/orcl/datafile1.dbf
    /u01/app/oracle/oradata/orcl/temp_01.dbf
    /u01/app/oracle/oradata/orcl/datafile3.dbf
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
    /u01/app/oracle/oradata/orcl/datafile4.dbf
    /u01/app/oracle/oradata/orcl/datafile5.dbf
    /u01/app/oracle/oradata/orcl/datafilebig_1.dfb
    /u01/app/oracle/oradata/orcl/temp_1.dbf
    /u01/app/oracle/oradata/orcl/temp_2.dbf
    /home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_6.dbf
    /u01/app/oracle/oradata/orcl/tbs_example .dbf
    /u01/app/oracle/oradata/orcl/tp1.dbf
    /u01/app/oracle/oradata/orcl/tp2.dbf
    /u01/app/oracle/oradata/orcl/ts1.dbf
    /u01/app/oracle/oradata/orcl/ts2.dbf
    /u01/app/oracle/oradata/orcl/ts3.dbf
    /u01/app/oracle/oradata/orcl/tbsp_1.dbf
    /u01/app/oracle/oradata/orcl/redo03.log
    /u01/app/oracle/oradata/orcl/redo02.log
    /u01/app/oracle/oradata/orcl/redo01.log
    /u01/app/oracle/oradata/orcl/users01.dbf
    /u01/app/oracle/oradata/orcl/undotbs01.dbf
    /u01/app/oracle/oradata/orcl/sysaux01.dbf
    /u01/app/oracle/oradata/orcl/system01.dbf
    /u01/app/oracle/oradata/orcl/temp.dbf
    /u01/app/oracle/oradata/orcl/example01.dbf
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
    /u01/app/oracle/oradata/orcl/datafile1.dbf
    /u01/app/oracle/oradata/orcl/temp_01.dbf
    /u01/app/oracle/oradata/orcl/datafile3.dbf
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
    /u01/app/oracle/oradata/orcl/datafile4.dbf
    /u01/app/oracle/oradata/orcl/datafile5.dbf
    /u01/app/oracle/oradata/orcl/datafilebig_1.dfb
    /u01/app/oracle/oradata/orcl/temp_1.dbf
    /u01/app/oracle/oradata/orcl/temp_2.dbf
    /home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_6.dbf
    /u01/app/oracle/oradata/orcl/tbs_example .dbf
    /u01/app/oracle/oradata/orcl/tp1.dbf
    /u01/app/oracle/oradata/orcl/tp2.dbf
    /u01/app/oracle/oradata/orcl/ts1.dbf
    /u01/app/oracle/oradata/orcl/ts2.dbf
    /u01/app/oracle/oradata/orcl/ts3.dbf
    /u01/app/oracle/oradata/orcl/tbsp_1.dbf
    SYSTEM
    SYSAUX
    UNDOTBS1
    USERS
    TEMP
    EXAMPLE
    TBS_TEST1
    TEMP_01
    TBS_TEST_3
    TBS_TEST4
    TBS_TEST5
    TBS_BIG_1
    TEMP_1
    TBS_EXAMPLE
    TS_1
    TS_2
    TS_3
    TBSP_1
    SYSTEM
    SYSAUX
    UNDOTBS1
    USERS
    TEMP
    EXAMPLE
    TBS_TEST1
    TEMP_01
    TBS_TEST_3
    TBS_TEST4
    TBS_TEST5
    TBS_BIG_1
    TEMP_1
    TBS_EXAMPLE
    TS_1
    TS_2
    TS_3
    TBSP_1
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    :/A^
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2016_11_30/o1_mf_1_6_d3vpslgx_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2016_12_01/o1_mf_1_7_d409htxg_.arc
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    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2016_12_08/o1_mf_1_11_d4jtlscq_.arc
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    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2016_12_08/o1_mf_1_11_d4jtlscq_.arc
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    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive2_1/1_114_929245147.dbf
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive3_1/1_114_929245147.dbf
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive5/1_114_929245147.dbf
    f@n-
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    u01/app/oracle/oradata/orcl/example01.dbf
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    u01/app/oracle/oradata/orcl/example01.dbf
    TAG20180227T233210
    /home/oracle/oracle_system_files_back/controlfile_bak/controlfile_bak_20180227_1/control_file1.bkp
    orcl
    umwgS
     :/Ssf
    orcl
    umwgS
     :/Ssf
    v6n-
    v6n-
    v6n-
    2018-03-27T23:58:10
    RMAN
    2018-03-27T23:58:10
    RMAN
    orcl
    UNNAMED_INSTANCE_2
    UNNAMED_INSTANCE_3
    UNNAMED_INSTANCE_4
    UNNAMED_INSTANCE_5
    UNNAMED_INSTANCE_6
    UNNAMED_INSTANCE_7
    UNNAMED_INSTANCE_8
    orcl
    UNNAMED_INSTANCE_2
    UNNAMED_INSTANCE_3
    UNNAMED_INSTANCE_4
    UNNAMED_INSTANCE_5
    UNNAMED_INSTANCE_6
    UNNAMED_INSTANCE_7
    UNNAMED_INSTANCE_8
    ACM unit testing operation
    LSB Database Guard
    Supplemental Log Data DDL
    LSB Role Change Support
    RFS block and kill across RAC
    RAC-wide SGA
    ACM unit testing operation
    LSB Database Guard
    Supplemental Log Data DDL
    LSB Role Change Support
    RFS block and kill across RAC
    RAC-wide SGA
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive2/1_114_929245147.dbf
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    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive1/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_bac
    k/archivelog/archivelog_20180305/archive2_1/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive3_1/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive5/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive2/1_277_929245147.dbf
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_23/o1_mf_1_278_ffvy23sx_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_23/o1_mf_1_279_ffw0h89h_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_280_ffw49m84_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_281_ffwrpq0n_.arc
    'c7L
    :]G[
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_282_ffxf58nz_.arc
    'c7]G[
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_283_ffy1d4fb_.arc
    :f+
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_284_ffyg44qg_.arc
    'c7f+
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_26/o1_mf_1_285_fg3vby7c_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_26/o1_mf_1_286_fg3wj6h8_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_27/o1_mf_1_287_fg3xwhxt_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_27/o1_mf_1_288_fg6c78b0_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_27/o1_mf_1_289_fg6l7xt9_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_28/o1_mf_1_290_fg7jgsqx_.arc
    :/A^
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_28/o1_mf_1_291_fg83k3rx_.arc
    'c7/A^
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_28/o1_mf_1_292_fg940vg1_.arc
    'c7L
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_293_fg96wpvq_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_294_fg9vqxlr_.arc
    :/z_
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_295_fgbjhmfd_.arc
    'c7/z_
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_296_fgcjmr69_.arc
    'c7%
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_297_fgcvnrm1_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_298_fgd8q70j_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_299_fgft95o6_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_300_fgg8d7j5_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_01/o1_mf_1_301_fggjd8j2_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/arch
    k/archivelog/archivelog_20180305/archive2_1/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive3_1/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive5/1_277_929245147.dbf
    'c7g>Y
    /home/oracle/oracle_system_files_back/archivelog/archivelog_20180305/archive2/1_277_929245147.dbf
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_23/o1_mf_1_278_ffvy23sx_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_23/o1_mf_1_279_ffw0h89h_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_280_ffw49m84_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_281_ffwrpq0n_.arc
    'c7L
    :]G[
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_282_ffxf58nz_.arc
    'c7]G[
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_283_ffy1d4fb_.arc
    :f+
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_24/o1_mf_1_284_ffyg44qg_.arc
    'c7f+
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_26/o1_mf_1_285_fg3vby7c_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_26/o1_mf_1_286_fg3wj6h8_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_27/o1_mf_1_287_fg3xwhxt_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_27/o1_mf_1_288_fg6c78b0_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_27/o1_mf_1_289_fg6l7xt9_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_28/o1_mf_1_290_fg7jgsqx_.arc
    :/A^
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_28/o1_mf_1_291_fg83k3rx_.arc
    'c7/A^
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_28/o1_mf_1_292_fg940vg1_.arc
    'c7L
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_293_fg96wpvq_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_294_fg9vqxlr_.arc
    :/z_
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_295_fgbjhmfd_.arc
    'c7/z_
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_29/o1_mf_1_296_fgcjmr69_.arc
    'c7%
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_297_fgcvnrm1_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_298_fgd8q70j_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_299_fgft95o6_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_04_30/o1_mf_1_300_fgg8d7j5_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_01/o1_mf_1_301_fggjd8j2_.arc
    ivelog/2018_05_01/o1_mf_1_302_fghlldnm_.arc
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_303_fgoxpp0q_.arc
    ivelog/2018_05_01/o1_mf_1_302_fghlldnm_.arc
    [oracle@localhost ~]$


              2:控制文件的复用

     

                 2-1:增加控制文件,改变现有控制文件的位置,改变控制文件的名称:

    一:关闭数据库;

    [oracle@localhost ~]$ sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Thu May 3 20:16:20 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    
    SYS@orcl> desc v$instance;
     Name                                      Null?    Type
     ----------------------------------------- -------- ----------------------------
     INSTANCE_NUMBER                                    NUMBER
     INSTANCE_NAME                                      VARCHAR2(16)
     HOST_NAME                                          VARCHAR2(64)
     VERSION                                            VARCHAR2(17)
     STARTUP_TIME                                       DATE
     STATUS                                             VARCHAR2(12)
     PARALLEL                                           VARCHAR2(3)
     THREAD#                                            NUMBER
     ARCHIVER                                           VARCHAR2(7)
     LOG_SWITCH_WAIT                                    VARCHAR2(15)
     LOGINS                                             VARCHAR2(10)
     SHUTDOWN_PENDING                                   VARCHAR2(3)
     DATABASE_STATUS                                    VARCHAR2(17)
     INSTANCE_ROLE                                      VARCHAR2(18)
     ACTIVE_STATE                                       VARCHAR2(9)
     BLOCKED                                            VARCHAR2(3)
    
    SYS@orcl> select status from v$instance;
    
    STATUS
    ------------
    OPEN
    
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SYS@orcl> quit;
    Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    [oracle@localhost ~]$


    二:拷贝控制文件:

    [oracle@localhost ~]$ cp /u01/app/oracle/oradata/orcl/control01.ctl  /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    [oracle@localhost ~]$ ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/
    control01_20180503.ctl
    [oracle@localhost ~]$
    

    三: 增加一个控制文件:

    把数据库启动在 nomount状态

    [oracle@localhost ~]$ sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Thu May 3 20:27:54 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    Connected to an idle instance.
    
    SYS@orcl> startup nomount
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    SYS@orcl> show parameter control
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    control_file_record_keep_time        integer     7
    control_files                        string      /u01/app/oracle/oradata/orcl/c
                                                     ontrol01.ctl, /u01/app/oracle/
                                                     fast_recovery_area/orcl/contro
                                                     l02.ctl
    control_management_pack_access       string      DIAGNOSTIC+TUNING
    SYS@orcl> alter system set control_files='/u01/app/oracle/oradata/orcl/control01.ctl','/u01/app/oracle/fast_recovery_area/orcl/control02.ctl','/home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl' scope=spfile;
    
    System altered.
    
    SYS@orcl> shutdown immediate;
    ORA-01507: database not mounted
    
    
    ORACLE instance shut down.
    SYS@orcl> startup ;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    Database opened.
    SYS@orcl> show parameter control;
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    control_file_record_keep_time        integer     7
    control_files                        string      /u01/app/oracle/oradata/orcl/c
                                                     ontrol01.ctl, /u01/app/oracle/
                                                     fast_recovery_area/orcl/contro
                                                     l02.ctl, /home/oracle/oracle_s
                                                     ystem_files_back/controlfile_b
                                                     ak/20180503/control01_20180503
                                                     .ctl
    control_management_pack_access       string      DIAGNOSTIC+TUNING
    SYS@orcl>
    SYS@orcl> select name from v$controlfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/control01.ctl
    /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    
    SYS@orcl>




                 2-2: 减少一个控制文件的操作步骤参考 2-1的步骤。

    省略过


                 2-3: 改变控制文件位置:操作步骤参考 2-1的步骤。

    省略过


                 2-4:重命名控制文件 :操作步骤参考 2-1的步骤。


    省略过


              3:控制文件备份


                 3-1:二进制方式的备份


    SYS@orcl>  ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak
    
    SYS@orcl> alter database backup controlfile to '/home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak/control01.ctl';
    
    Database altered.
    
    SYS@orcl>  ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak
    control01.ctl


                 3-2:文本方式的备份

    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503
    bak  control01_20180503.ctl
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503
    bak  bak_control_txt  control01_20180503.ctl
    
    SYS@orcl> alter database backup controlfile to trace as '/home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/control01_20180503.ctl';
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/
    control01_20180503.ctl
    
    SYS@orcl> ho cat /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/control01_20180503.ctl
    -- The following are current System-scope REDO Log Archival related
    -- parameters and can be included in the database initialization file.
    --
    -- LOG_ARCHIVE_DEST=''
    -- LOG_ARCHIVE_DUPLEX_DEST=''
    --
    -- LOG_ARCHIVE_FORMAT=%t_%s_%r.dbf
    --
    -- DB_UNIQUE_NAME="orcl"
    --
    -- LOG_ARCHIVE_CONFIG='SEND, RECEIVE, NODG_CONFIG'
    -- LOG_ARCHIVE_MAX_PROCESSES=4
    -- STANDBY_FILE_MANAGEMENT=MANUAL
    -- STANDBY_ARCHIVE_DEST=?/dbs/arch
    -- FAL_CLIENT=''
    -- FAL_SERVER=''
    --
    -- LOG_ARCHIVE_DEST_1='LOCATION=USE_DB_RECOVERY_FILE_DEST'
    -- LOG_ARCHIVE_DEST_1='MANDATORY NOREOPEN NODELAY'
    -- LOG_ARCHIVE_DEST_1='ARCH NOAFFIRM EXPEDITE NOVERIFY SYNC'
    -- LOG_ARCHIVE_DEST_1='NOREGISTER NOALTERNATE NODEPENDENCY'
    -- LOG_ARCHIVE_DEST_1='NOMAX_FAILURE NOQUOTA_SIZE NOQUOTA_USED NODB_UNIQUE_NAME'
    -- LOG_ARCHIVE_DEST_1='VALID_FOR=(PRIMARY_ROLE,ONLINE_LOGFILES)'
    -- LOG_ARCHIVE_DEST_STATE_1=ENABLE
    
    --
    -- Below are two sets of SQL statements, each of which creates a new
    -- control file and uses it to open the database. The first set opens
    -- the database with the NORESETLOGS option and should be used only if
    -- the current versions of all online logs are available. The second
    -- set opens the database with the RESETLOGS option and should be used
    -- if online logs are unavailable.
    -- The appropriate set of statements can be copied from the trace into
    -- a script file, edited as necessary, and executed when there is a
    -- need to re-create the control file.
    --
    --     Set #1. NORESETLOGS case
    --
    -- The following commands will create a new control file and use it
    -- to open the database.
    -- Data used by Recovery Manager will be lost.
    -- Additional logs may be required for media recovery of offline
    -- Use this only if the current versions of all online logs are
    -- available.
    
    -- After mounting the created controlfile, the following SQL
    -- statement will place the database in the appropriate
    -- protection mode:
    --  ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE
    
    STARTUP NOMOUNT
    CREATE CONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS  ARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
    LOGFILE
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    -- STANDBY LOGFILE
    DATAFILE
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK
    ;
    
    -- Commands to re-create incarnation table
    -- Below log names MUST be changed to existing filenames on
    -- disk. Any one log file from each branch can be used to
    -- re-create incarnation records.
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_1_%u_.arc';
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_1_%u_.arc';
    -- Recovery is required if any of the datafiles are restored backups,
    -- or if the last shutdown was not normal or immediate.
    RECOVER DATABASE
    
    -- All logs need archiving and a log switch is needed.
    ALTER SYSTEM ARCHIVE LOG ALL;
    
    -- Database can now be opened normally.
    ALTER DATABASE OPEN;
    
    -- Commands to add tempfiles to temporary tablespaces.
    -- Online tempfiles have complete space information.
    -- Other tempfiles may require adjustment.
    ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_01 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_01.dbf'
         SIZE 314572800  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_1.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_2.dbf'
         SIZE 3072M REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_6.dbf'
         SIZE 2048M REUSE AUTOEXTEND ON NEXT 104857600  MAXSIZE 32767M;
    ALTER TABLESPACE TBS_EXAMPLE ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tbs_example .dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TP1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp1.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TP2 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp2.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    -- End of tempfile additions.
    --
    --     Set #2. RESETLOGS case
    --
    -- The following commands will create a new control file and use it
    -- to open the database.
    -- Data used by Recovery Manager will be lost.
    -- The contents of online logs will be lost and all backups will
    -- be invalidated. Use this only if online logs are damaged.
    
    -- After mounting the created controlfile, the following SQL
    -- statement will place the database in the appropriate
    -- protection mode:
    --  ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE
    
    STARTUP NOMOUNT
    CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS  ARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
    LOGFILE
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    -- STANDBY LOGFILE
    DATAFILE
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK
    ;
    
    -- Commands to re-create incarnation table
    -- Below log names MUST be changed to existing filenames on
    -- disk. Any one log file from each branch can be used to
    -- re-create incarnation records.
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_1_%u_.arc';
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_1_%u_.arc';
    -- Recovery is required if any of the datafiles are restored backups,
    -- or if the last shutdown was not normal or immediate.
    RECOVER DATABASE USING BACKUP CONTROLFILE
    
    -- Database can now be opened zeroing the online logs.
    ALTER DATABASE OPEN RESETLOGS;
    
    -- Commands to add tempfiles to temporary tablespaces.
    -- Online tempfiles have complete space information.
    -- Other tempfiles may require adjustment.
    ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_01 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_01.dbf'
         SIZE 314572800  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_1.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_2.dbf'
         SIZE 3072M REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_6.dbf'
         SIZE 2048M REUSE AUTOEXTEND ON NEXT 104857600  MAXSIZE 32767M;
    ALTER TABLESPACE TBS_EXAMPLE ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tbs_example .dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TP1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp1.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TP2 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp2.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    -- End of tempfile additions.
    --
    
    SYS@orcl>





              4:重建控制文件



                 4-1:




                 4-2: 关闭数据库,并做控制文件的删除操作

    1:关闭数据库

    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SYS@orcl>

    2:做实验操作:假设控制文件丢失。即:删除 control01.ctl 文件;(注:该操作是在有控制文件的二进制或者是文本文件备份的前提下进行删除操作的;如果没有备份或者不知道怎么备份,请参考 本文的    3:控制文件备份

    查看控制文件路劲:

    SYS@orcl> select name from v$controlfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/control01.ctl
    /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    
    SYS@orcl>

    删除该路劲下所有的控制文件:

    SYS@orcl> ho ls /u01/app/oracle/oradata/orcl/
    control01.ctl  datafilebig_1.dfb  redo04.log        tbsp_1.dbf   tp1.dbf  undotbs01.dbf
    datafile1.dbf  example01.dbf      redo4.log         temp_01.dbf  tp2.dbf  undotbs_1.dbf
    datafile3.dbf  redo01.log         sysaux01.dbf      temp_1.dbf   ts1.dbf  undotbs_add.dbf
    datafile4.dbf  redo02.log         system01.dbf      temp_2.dbf   ts2.dbf  users01.dbf
    datafile5.dbf  redo03.log         tbs_example .dbf  temp.dbf     ts3.dbf
    
    SYS@orcl> ho rm /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl> ho ls  /u01/app/oracle/oradata/orcl/
    datafile1.dbf  datafilebig_1.dfb  redo03.log    system01.dbf      temp_1.dbf  tp2.dbf  undotbs01.dbf
    datafile3.dbf  example01.dbf      redo04.log    tbs_example .dbf  temp_2.dbf  ts1.dbf  undotbs_1.dbf
    datafile4.dbf  redo01.log         redo4.log     tbsp_1.dbf        temp.dbf    ts2.dbf  undotbs_add.dbf
    datafile5.dbf  redo02.log         sysaux01.dbf  temp_01.dbf       tp1.dbf     ts3.dbf  users01.dbf
    
    SYS@orcl>
    SYS@orcl> ho ls /u01/app/oracle/fast_recovery_area
    orcl  ORCL
    
    SYS@orcl>  ho ls /u01/app/oracle/fast_recovery_area/orcl
    control02.ctl  control03.ctl
    
    SYS@orcl> ho rm /u01/app/oracle/fast_recovery_area/orcl/*.ctl
    
    SYS@orcl> ho ls /u01/app/oracle/fast_recovery_area/orcl
    
    SYS@orcl>  
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503
    bak  bak_control_txt  control01_20180503.ctl
    
    
    SYS@orcl> ho rm /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503
    bak  bak_control_txt




                 4-3: 备份所有的数据文件和日志文件





                 4-4: 开启一个新实例,但是并没有 到 mount 和 open 状态

    1:把数据库开启到 nomount 状态:

    SYS@orcl> startup nomount;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    SYS@orcl>



                 4-5: 利用 ctontrolfile 创建一个新的 控制文件,并打开数据库

    #进入以文本方式备份的控制文件信息的文件夹中;
    [oracle@localhost bak_control_txt]$ pwd
    /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt
    #查看备份的文件信息
    [oracle@localhost bak_control_txt]$ ls
    control01_20180503.ctl
    # 提出去 sql 脚本信息 到 con.sql 文件中
    [oracle@localhost bak_control_txt]$ cat control01_20180503.ctl |grep -v ^- > con.sql
    [oracle@localhost bak_control_txt]$ ls
    con.sql  control01_20180503.ctl
    # 查看 con.sql 文件中的脚本信息
    [oracle@localhost bak_control_txt]$ cat con.sql
    
    
    
    STARTUP NOMOUNT
    CREATE CONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS  ARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
    LOGFILE
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    DATAFILE
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK
    ;
    
    RECOVER DATABASE
    
    ALTER SYSTEM ARCHIVE LOG ALL;
    
    ALTER DATABASE OPEN;
    
    ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_01 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_01.dbf'
         SIZE 314572800  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_1.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_2.dbf'
         SIZE 3072M REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_6.dbf'
         SIZE 2048M REUSE AUTOEXTEND ON NEXT 104857600  MAXSIZE 32767M;
    ALTER TABLESPACE TBS_EXAMPLE ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tbs_example .dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TP1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp1.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TP2 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp2.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    
    
    STARTUP NOMOUNT
    CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS  ARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
    LOGFILE
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    DATAFILE
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK
    ;
    
    RECOVER DATABASE USING BACKUP CONTROLFILE
    
    ALTER DATABASE OPEN RESETLOGS;
    
    ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_01 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_01.dbf'
         SIZE 314572800  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_1.dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/temp_2.dbf'
         SIZE 3072M REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TEMP_1 ADD TEMPFILE '/home/oracle/oracle_system_files_back/datafiles_bak/datafiles_bak_20180311/temp_6.dbf'
         SIZE 2048M REUSE AUTOEXTEND ON NEXT 104857600  MAXSIZE 32767M;
    ALTER TABLESPACE TBS_EXAMPLE ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tbs_example .dbf'
         SIZE 52428800  REUSE AUTOEXTEND ON NEXT 52428800  MAXSIZE 2048M;
    ALTER TABLESPACE TP1 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp1.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    ALTER TABLESPACE TP2 ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tp2.dbf'
         SIZE 104857600  REUSE AUTOEXTEND OFF;
    # 编辑 con.sql 文件的脚本信息。只留下 cat con.sql 命令显示出来的创建控制文件的sql信息内容 
    [oracle@localhost bak_control_txt]$ vi con.sql
    [oracle@localhost bak_control_txt]$ cat con.sql
    
    
    
    # 创建 控制文件 ,数据库名称为:ORCL  非归档模式 
    CREATE CONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS  ARCHIVELOG
        MAXLOGFILES 16     #  最大的日志文件个数为16 个
        MAXLOGMEMBERS 3    #  最大的日志成员的个数为3个
        MAXDATAFILES 100   #  最大的数据文件个数为100个 最多100个表空间
        MAXINSTANCES 8     #  最大的数据库实例个数为8个
        MAXLOGHISTORY 292  #
    LOGFILE   #日志文件
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    DATAFILE  #数据文件位置信息
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK #指定一个字符集
    ;
    
    [oracle@localhost bak_control_txt]$
    


    1:创建控制文件:

    SYS@orcl> startup nomount;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    SYS@orcl> @/home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/con.sql
    
    Control file created.
    
    SYS@orcl>

    2:打开数据库:

    SYS@orcl> alter database open;
    
    Database altered.
    
    SYS@orcl>

    3:查看控制文件信息:

    SYS@orcl> show parameter control
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    control_file_record_keep_time        integer     7
    control_files                        string      /u01/app/oracle/oradata/orcl/c
                                                     ontrol01.ctl, /u01/app/oracle/
                                                     fast_recovery_area/orcl/contro
                                                     l02.ctl, /home/oracle/oracle_s
                                                     ystem_files_back/controlfile_b
                                                     ak/20180503/control01_20180503
                                                     .ctl
    control_management_pack_access       string      DIAGNOSTIC+TUNING
    SYS@orcl>

                 4-6: 储存备份一个控制文件

    SYS@orcl> select name from v$controlfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/control01.ctl
    /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_2018050
    3.ctl
    
    
    SYS@orcl>
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/
    con.sql  control01_20180503.ctl
    
    SYS@orcl>  alter database backup controlfile to trace as '/home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/control01_20180503_1.ctl';
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_control_txt/
    con.sql  control01_20180503_1.ctl  control01_20180503.ctl
    
    SYS@orcl>
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_01
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_01
    
    SYS@orcl> alter database backup controlfile to '/home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_01/control01.ctl';
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_01
    control01.ctl
    
    SYS@orcl>




              5:当发生以下操作的时候,最好备份控制文件


    • 新增、删除、重命名 数据库文件
    • 新增、删除 一个表空间  或者 更改表空间的读/写状态
    • 新增、删除 操作日志文件或者日志组


              6:控制文件的恢复(环境:非归档且日志文件没有覆盖   /    环境:归档模式   )


                6-1:备份控制文件 

    1:查看数据库状态和数据库实例状态 和数据库归档状态:

    #进入sqlplus 命令行中
    [oracle@localhost ~]$ sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Thu May 3 22:29:51 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    Connected to an idle instance.
    #启动数据库
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    Database opened.
    #查看数据库实例名称
    
    SYS@orcl> select instance_name from v$instance;
    
    INSTANCE_NAME
    ----------------
    orcl
    #查看数据库 归档模式:
    SYS@orcl> archive log list;
    Database log mode              Archive Mode   # 归档模式为:归档
    Automatic archival             Enabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     304
    Next log sequence to archive   307
    Current log sequence           307
    #关闭数据库
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    #开始数据库 到 mount 状态
    SYS@orcl> startup mount;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    # 修改数据库归档模式:归档->非归档 
    SYS@orcl> alter database noarchivelog;
    
    Database altered.
    #打开数据库
    SYS@orcl> alter database open;
    
    Database altered.
    #查看数据库归档模式:  
    SYS@orcl> archive log list;
    Database log mode              No Archive Mode  #非归档模式
    Automatic archival             Disabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     304
    Current log sequence           307   #日志序列号为 307
    SYS@orcl>


    2:以二进制形式备份控制文件:

    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/
    bak  bak_01  bak_control_txt  control01_20180503.ctl
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/
    bak  bak_01  bak_02  bak_control_txt  control01_20180503.ctl
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02
    
    
    
    #以二进制形式备份控制文件 
    SYS@orcl>  alter database backup controlfile to '/home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02/control01.ctl';
    
    Database altered.
    
    SYS@orcl> ho ls  /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02
    control01.ctl
    
    SYS@orcl>



                6-2:删除(改名)所有的控制文件 

    ---查看控制文件信息
    SYS@orcl> select name from v$controlfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/control01.ctl
    /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    --删除控制文件
    SYS@orcl> ho rm /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl> ho rm /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    SYS@orcl> ho rm /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    --重启数据库
    SYS@orcl> startup force;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    ORA-00205: error in identifying control file, check alert log for more info
    
    
    SYS@orcl>
    --查看数据库状态: 
    SYS@orcl> select status from v$instance;
    
    STATUS
    ------------
    STARTED  --此值表示数据库处于启动状态:nomount 状态
    
    SYS@orcl>
    




                6-3: 利用备份的控制文件得到正常的位置( CP )

    --利用备份的二进制控制文件进行控制文件还原
    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02/control01.ctl   /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02/control01.ctl  /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180503/bak_02/control01.ctl  /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    --把数据库切换到 mount 状态 
    SYS@orcl> alter database mount;
    
    Database altered.
    ---查看数据库状态
    SYS@orcl> select status from v$instance;
    
    STATUS
    ------------
    MOUNTED
    ---把数据库打开
    SYS@orcl> alter database open;
    alter database open
    *
    ERROR at line 1:
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    
    
    SYS@orcl>

    注:解释为什么会出现这个 ORA_01589 错误:

    image


                6-4:  alter database open resetlogs;

    ---打开数据库: 出现错误ORA-01589 
    SYS@orcl> alter database open;
    alter database open
    *
    ERROR at line 1:
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    
    --用日志文件刷新 方式打开数据库
    SYS@orcl> alter database open resetlogs;
    alter database open resetlogs
    *
    ERROR at line 1:
    ORA-01194: file 1 needs more recovery to be consistent
    ORA-01110: data file 1: '/u01/app/oracle/oradata/orcl/system01.dbf'
    
    -- 重置数据库
    
    SYS@orcl> recover database;
    ORA-00283: recovery session canceled due to errors
    ORA-01610: recovery using the BACKUP CONTROLFILE option must be done
    
    -- 重新用 控制文件 恢复数据库
    
    SYS@orcl> recover database using backup controlfile;
    ORA-00279: change 6452849 generated at 05/03/2018 22:31:38 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_307_%u_.ar
    c
    ORA-00280: change 6452849 for thread 1 is in sequence #307
    -----注:此时需要在重新打开一个新的 SSH 控制窗口。该本窗口请不要关闭 ;此处标记为 SSH_窗口1;重新打开的SHH窗口标记为:SSH_窗口2.下列后续操作在 SSH_窗口2 操作。主要目的是要处理“ORA-00280: change 6452849 for thread 1 is in sequence #307”这个 日志序号为307与之对应SCN号接近“6452849 ”的日志组,并找到该当前日志组的日志文件路径信息
    

    image


                6-5:recover database using backup controlfile; 输入响应的日志文件 

    ---在窗口2 中登录进入 sqlplus 中
    [oracle@localhost bak_control_txt]$ sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Thu May 3 23:33:50 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    ---查看归档日志信息列表
    SYS@orcl> archive log list;
    Database log mode              No Archive Mode
    Automatic archival             Disabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     304
    Current log sequence           307  --当前 日志序号为307 与:上文需要的307 对应
    SYS@orcl> select * from v$log;
    
        GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC
    ---------- ---------- ---------- ---------- ---------- ---------- ---
    STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME
    ---------------- ------------- --------- ------------ ---------
             1          1        306   52428800        512          2 YES
    INACTIVE               6447050 03-MAY-18      6449859 03-MAY-18
    
             4          1        307   52428800        512          2 NO
    CURRENT                6449859 03-MAY-18   2.8147E+14
    ----当前的日志组为 日志组4 
             3          1        305   52428800        512          1 YES
    INACTIVE               6443391 03-MAY-18      6447050 03-MAY-18
    
    
        GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC
    ---------- ---------- ---------- ---------- ---------- ---------- ---
    STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME
    ---------------- ------------- --------- ------------ ---------
             2          1        304   52428800        512          1 YES
    INACTIVE               6434718 03-MAY-18      6443391 03-MAY-18
    
    
    SYS@orcl> select member from v$logfile;
    
    MEMBER
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/redo01.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.lo
    g
    
    /u01/app/oracle/oradata/orcl/redo03.log
    /u01/app/oracle/oradata/orcl/redo02.log
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228.log
    
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228_1.log
    
    MEMBER
    --------------------------------------------------------------------------------
    
    
    6 rows selected.
    
    SYS@orcl> desc v$logfile;
     Name                                      Null?    Type
     ----------------------------------------- -------- ----------------------------
     GROUP#                                             NUMBER
     STATUS                                             VARCHAR2(7)
     TYPE                                               VARCHAR2(7)
     MEMBER                                             VARCHAR2(513)
     IS_RECOVERY_DEST_FILE                              VARCHAR2(3)
    ---查找日志组为4 的日志文件路径信息
    SYS@orcl> select GROUP#,MEMBER from v$logfile;
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
             1
    /u01/app/oracle/oradata/orcl/redo01.log
    
             1
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.lo
    g
    
             3
    /u01/app/oracle/oradata/orcl/redo03.log
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
    
             2
    /u01/app/oracle/oradata/orcl/redo02.log
    
             4
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228.log
    
             4
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228_1.log
    
    
    6 rows selected.
    
    SYS@orcl>


                6-6: alter database open resetlogs


    SYS@orcl> recover database using backup controlfile;
    ORA-00279: change 6452849 generated at 05/03/2018 22:31:38 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_03/o1_mf_1_307_%u_.ar
    c
    ORA-00280: change 6452849 for thread 1 is in sequence #307
    
    
    Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
    ---执行查找到的当前日志文件组的任意一日志成员的日志路径信息
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
    Log applied.
    Media recovery complete.
    ---重新 刷新打开数据库
    SYS@orcl>  alter database open resetlogs;
    
    Database altered.



              7:控制文件的恢复(环境:非归档、日志文件被覆盖)


               7-1:备份控制文件    alter database backup controlfile to ‘/…../bak.ctl’; 

    [oracle@localhost rlwrap-0.37]$ rlwrap sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 14:36:18 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    
    SYS@orcl> archive log list;
    Database log mode              No Archive Mode
    Automatic archival             Disabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     4
    Current log sequence           7
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak
    20180503  controlfile_bak_20180227  controlfile_bak_20180227_1
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/controlfile_bak/20180506
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180506
    
    
    SYS@orcl> alter database backup controlfile to '/home/oracle/oracle_system_files_back/controlfile_bak/20180506/c1.ctl';
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180506
    c1.ctl
    
    SYS@orcl>



               7-2:切换日志  alter system switch logfile;  切换后,日志文件内容都会被清空

    ---切换日志
    SYS@orcl> alter system switch logfile;
    
    System altered.
    
    SYS@orcl> alter system switch logfile;
    
    System altered.
    
    SYS@orcl> alter system switch logfile;
    
    System altered.
    
    SYS@orcl> alter system switch logfile;
    alter system switch logfile;
    
    System altered.
    
    SYS@orcl>
    System altered.
    
    SYS@orcl> alter system switch logfile;
    
    System altered.
    
    SYS@orcl> alter system switch logfile;
    
    System altered.
    
    SYS@orcl> alter system switch logfile;
    
    System altered.
    --/ 代表执行上一条命令
    SYS@orcl> /
    
    System altered.
    
    SYS@orcl> /
    
    System altered.
    
    SYS@orcl> /
    
    System altered.
    
    SYS@orcl> /
    
    System altered.
    
    SYS@orcl> /
    
    System altered.
    
    SYS@orcl> alter system switch logfile;
    
    System altered.
    
    SYS@orcl>


               7-3: 关闭数据库

    SYS@orcl> show parameter control
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    control_file_record_keep_time        integer     7
    control_files                        string      /u01/app/oracle/oradata/orcl/c
                                                     ontrol01.ctl, /u01/app/oracle/
                                                     fast_recovery_area/orcl/contro
                                                     l02.ctl, /home/oracle/oracle_s
                                                     ystem_files_back/controlfile_b
                                                     ak/20180503/control01_20180503
                                                     .ctl
    control_management_pack_access       string      DIAGNOSTIC+TUNING
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SYS@orcl>

               7-4:  删除(改名)所有控制文件

    SYS@orcl> ho rm /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl> ho rm /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    SYS@orcl> ho rm /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    SYS@orcl> ho ls /u01/app/oracle/oradata/orcl/
    datafile1.dbf  datafilebig_1.dfb  redo03.log    system01.dbf      temp_1.dbf  tp2.dbf  undotbs01.dbf
    datafile3.dbf  example01.dbf      redo04.log    tbs_example .dbf  temp_2.dbf  ts1.dbf  undotbs_1.dbf
    datafile4.dbf  redo01.log         redo4.log     tbsp_1.dbf        temp.dbf    ts2.dbf  undotbs_add.dbf
    datafile5.dbf  redo02.log         sysaux01.dbf  temp_01.dbf       tp1.dbf     ts3.dbf  users01.dbf
    
    SYS@orcl> ho ls /u01/app/oracle/fast_recovery_area/orcl/
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/
    bak  bak_01  bak_02  bak_control_txt
    
    SYS@orcl>
    SYS@orcl>


               7-5:  利用备份的控制文件得到正常的位置

    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180506/c1.ctl   /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl>
    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180506/c1.ctl /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180506/c1.ctl  /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    SYS@orcl>  ho ls /u01/app/oracle/oradata/orcl/
    control01.ctl  datafilebig_1.dfb  redo04.log        tbsp_1.dbf   tp1.dbf  undotbs01.dbf
    datafile1.dbf  example01.dbf      redo4.log         temp_01.dbf  tp2.dbf  undotbs_1.dbf
    datafile3.dbf  redo01.log         sysaux01.dbf      temp_1.dbf   ts1.dbf  undotbs_add.dbf
    datafile4.dbf  redo02.log         system01.dbf      temp_2.dbf   ts2.dbf  users01.dbf
    datafile5.dbf  redo03.log         tbs_example .dbf  temp.dbf     ts3.dbf
    
    SYS@orcl> ho ls /u01/app/oracle/fast_recovery_area/orcl/
    control02.ctl
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180503/
    bak  bak_01  bak_02  bak_control_txt  control01_20180503.ctl
    
    SYS@orcl>


               7-6:  mount数据库

    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    
    
    SYS@orcl> ho tail -n 10 /u01/app/oracle/diag/rdbms/orcl/orcl/trace/alert_orcl.log
    ALTER DATABASE   MOUNT
    Successful mount of redo thread 1, with mount id 1503203849
    Database mounted in Exclusive Mode
    Lost write protection disabled
    Completed: ALTER DATABASE   MOUNT
    Sun May 06 15:04:45 2018
    ALTER DATABASE OPEN
    Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8634.trc:
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    ORA-1589 signalled during: ALTER DATABASE OPEN...
    
    




               7-7:  alter database open resetlogs;

    SYS@orcl> alter database open resetlogs;
    alter database open resetlogs
    *
    ERROR at line 1:
    ORA-01152: file 1 was not restored from a sufficiently old backup
    ORA-01110: data file 1: '/u01/app/oracle/oradata/orcl/system01.dbf'
    
    
    SYS@orcl>



               7-8:recover database using backup controlfile; 

    SYS@orcl> alter database open resetlogs;
    alter database open resetlogs
    *
    ERROR at line 1:
    ORA-01152: file 1 was not restored from a sufficiently old backup
    ORA-01110: data file 1: '/u01/app/oracle/oradata/orcl/system01.dbf'
    
    
    SYS@orcl> revover database ;
    SP2-0734: unknown command beginning "revover da..." - rest of line ignored.
    SYS@orcl> recover database;
    ORA-00283: recovery session canceled due to errors
    ORA-01610: recovery using the BACKUP CONTROLFILE option must be done
    
    
    SYS@orcl> recover database using backup controlfile;
    ORA-00279: change 6632674 generated at 05/06/2018 10:40:44 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_7_%u_.arc
    ORA-00280: change 6632674 for thread 1 is in sequence #7
    
    
    Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
    

    打开一个新的窗口 ;查询日志文件信息;

    [oracle@localhost controlfile_bak]$ sqlplus  / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 15:07:29 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    --查看日志列表信息
    SYS@orcl> archive log list;
    Database log mode              No Archive Mode
    Automatic archival             Disabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     4
    Current log sequence           7
    --查看日志状态信息  显示当前日志组为:3
    SYS@orcl> select * from v$log;
    
        GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC
    ---------- ---------- ---------- ---------- ---------- ---------- ---
    STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME
    ---------------- ------------- --------- ------------ ---------
             1          1          5   52428800        512          2 NO
    INACTIVE               6570908 05-MAY-18      6606416 06-MAY-18
    
             4          1          4   52428800        512          2 NO
    INACTIVE               6539339 05-MAY-18      6570908 05-MAY-18
    
             3          1          7   52428800        512          1 NO
    CURRENT                6622031 06-MAY-18   2.8147E+14
    
    
        GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC
    ---------- ---------- ---------- ---------- ---------- ---------- ---
    STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME
    ---------------- ------------- --------- ------------ ---------
             2          1          6   52428800        512          1 NO
    INACTIVE               6606416 06-MAY-18      6622031 06-MAY-18
    
    ---查看日志组与日志组的日志成员位置信息
    SYS@orcl>  select GROUP#,MEMBER from v$logfile;
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
             1
    /u01/app/oracle/oradata/orcl/redo01.log
    
             1
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.lo
    g
    
             3
    /u01/app/oracle/oradata/orcl/redo03.log
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
    
             2
    /u01/app/oracle/oradata/orcl/redo02.log
    
             4
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228.log
    
             4
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228_1.log
    
    
    6 rows selected.
    
    SYS@orcl>

    回归到原处理问题的窗口1来:输入 当前日志组成员的路径信息: /u01/app/oracle/oradata/orcl/redo03.log

    YS@orcl> recover database using backup controlfile;
    ORA-00279: change 6632674 generated at 05/06/2018 10:40:44 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_7_%u_.arc
    ORA-00280: change 6632674 for thread 1 is in sequence #7
    
    
    Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
    /u01/app/oracle/oradata/orcl/redo03.log  ---此执行后 还出现错误信息:因为日志文件都已经是空文件了。没有任何记录了。此时没有办法刷新控制文件的SCN号信息
    ORA-00326: log begins at change 6633457, need earlier change 6632674
    ORA-00334: archived log: '/u01/app/oracle/oradata/orcl/redo03.log'
    
    
    SYS@orcl>


               7-9: 打开隐藏参数   “_allow_resetlogs_corruption “true scope=spfile

    SYS@orcl> alter system set "_allow_resetlogs_corruption"=true scope=spfile;
    
    System altered.
    
    SYS@orcl>
    SYS@orcl> shutdown immediate;
    ORA-01109: database not open
    
    
    Database dismounted.
    ORACLE instance shut down.
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    
    
    SYS@orcl> alter database open resetlogs;
    alter database open resetlogs
    *
    ERROR at line 1:
    ORA-01092: ORACLE instance terminated. Disconnection forced
    ORA-00600: internal error code, arguments: [2662], [0], [6632682], [0],
    [6633635], [4194432], [], [], [], [], [], []
    Process ID: 8814
    Session ID: 191 Serial number: 3
    
    
    SYS@orcl> exit
    Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    [oracle@localhost rlwrap-0.37]$ rlwrap sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 15:23:16 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    Connected to an idle instance.
    
    SYS@orcl> startup;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    Database opened.
    SYS@orcl> archive log list;
    Database log mode              No Archive Mode
    Automatic archival             Disabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     1
    Current log sequence           2
    SYS@orcl>


    -----此时要对数据库进行备份操作

    ---关闭隐藏参数;
    SYS@orcl>  alter system reset  "_allow_resetlogs_corruption" scope=spfile;
    
    System altered.
    
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    Database opened.
    SYS@orcl>


    SYS@orcl>  ho ls /home/oracle/oracle_system_files_back/controlfile_bak
    20180503  20180506  controlfile_bak_20180227  controlfile_bak_20180227_1
    
    SYS@orcl>  ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180506
    c1.ctl
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/controlfile_bak/20180506
    mkdir: cannot create directory `/home/oracle/oracle_system_files_back/controlfile_bak/20180506': File exists
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt
    
    SYS@orcl> alter database backup controlfile to trace as '/home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt/controlfile_0180506_txt.ctl';
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt
    controlfile_0180506_txt.ctl
    
    SYS@orcl> ho cat  /home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt
    cat: /home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt: Is a directory
    
    SYS@orcl> ho cat  /home/oracle/oracle_system_files_back/controlfile_bak/20180506/con_txt/controlfile_0180506_txt.ctl
    -- The following are current System-scope REDO Log Archival related
    -- parameters and can be included in the database initialization file.
    --
    -- LOG_ARCHIVE_DEST=''
    -- LOG_ARCHIVE_DUPLEX_DEST=''
    --
    -- LOG_ARCHIVE_FORMAT=%t_%s_%r.dbf
    --
    -- DB_UNIQUE_NAME="orcl"
    --
    -- LOG_ARCHIVE_CONFIG='SEND, RECEIVE, NODG_CONFIG'
    -- LOG_ARCHIVE_MAX_PROCESSES=4
    -- STANDBY_FILE_MANAGEMENT=MANUAL
    -- STANDBY_ARCHIVE_DEST=?/dbs/arch
    -- FAL_CLIENT=''
    -- FAL_SERVER=''
    --
    -- LOG_ARCHIVE_DEST_1='LOCATION=USE_DB_RECOVERY_FILE_DEST'
    -- LOG_ARCHIVE_DEST_1='MANDATORY NOREOPEN NODELAY'
    -- LOG_ARCHIVE_DEST_1='ARCH NOAFFIRM EXPEDITE NOVERIFY SYNC'
    -- LOG_ARCHIVE_DEST_1='NOREGISTER NOALTERNATE NODEPENDENCY'
    -- LOG_ARCHIVE_DEST_1='NOMAX_FAILURE NOQUOTA_SIZE NOQUOTA_USED NODB_UNIQUE_NAME'
    -- LOG_ARCHIVE_DEST_1='VALID_FOR=(PRIMARY_ROLE,ONLINE_LOGFILES)'
    -- LOG_ARCHIVE_DEST_STATE_1=ENABLE
    
    --
    -- Below are two sets of SQL statements, each of which creates a new
    -- control file and uses it to open the database. The first set opens
    -- the database with the NORESETLOGS option and should be used only if
    -- the current versions of all online logs are available. The second
    -- set opens the database with the RESETLOGS option and should be used
    -- if online logs are unavailable.
    -- The appropriate set of statements can be copied from the trace into
    -- a script file, edited as necessary, and executed when there is a
    -- need to re-create the control file.
    --
    --     Set #1. NORESETLOGS case
    --
    -- The following commands will create a new control file and use it
    -- to open the database.
    -- Data used by Recovery Manager will be lost.
    -- Additional logs may be required for media recovery of offline
    -- Use this only if the current versions of all online logs are
    -- available.
    
    -- After mounting the created controlfile, the following SQL
    -- statement will place the database in the appropriate
    -- protection mode:
    --  ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE
    
    STARTUP NOMOUNT
    CREATE CONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS  NOARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
    LOGFILE
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    -- STANDBY LOGFILE
    DATAFILE
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK
    ;
    
    -- Commands to re-create incarnation table
    -- Below log names MUST be changed to existing filenames on
    -- disk. Any one log file from each branch can be used to
    -- re-create incarnation records.
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_1_%u_.arc';
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_1_%u_.arc';
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_1_%u_.arc';
    -- Recovery is required if any of the datafiles are restored backups,
    -- or if the last shutdown was not normal or immediate.
    RECOVER DATABASE
    
    -- Database can now be opened normally.
    ALTER DATABASE OPEN;
    
    -- No tempfile entries found to add.
    --
    --     Set #2. RESETLOGS case
    --
    -- The following commands will create a new control file and use it
    -- to open the database.
    -- Data used by Recovery Manager will be lost.
    -- The contents of online logs will be lost and all backups will
    -- be invalidated. Use this only if online logs are damaged.
    
    -- After mounting the created controlfile, the following SQL
    -- statement will place the database in the appropriate
    -- protection mode:
    --  ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE
    
    STARTUP NOMOUNT
    CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS  NOARCHIVELOG
        MAXLOGFILES 16
        MAXLOGMEMBERS 3
        MAXDATAFILES 100
        MAXINSTANCES 8
        MAXLOGHISTORY 292
    LOGFILE
      GROUP 1 (
        '/u01/app/oracle/oradata/orcl/redo01.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
      ) SIZE 50M BLOCKSIZE 512,
      GROUP 2 '/u01/app/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 3 '/u01/app/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512,
      GROUP 4 (
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log',
        '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log'
      ) SIZE 50M BLOCKSIZE 512
    -- STANDBY LOGFILE
    DATAFILE
      '/u01/app/oracle/oradata/orcl/system01.dbf',
      '/u01/app/oracle/oradata/orcl/sysaux01.dbf',
      '/u01/app/oracle/oradata/orcl/undotbs01.dbf',
      '/u01/app/oracle/oradata/orcl/users01.dbf',
      '/u01/app/oracle/oradata/orcl/example01.dbf',
      '/u01/app/oracle/oradata/orcl/datafile1.dbf',
      '/u01/app/oracle/oradata/orcl/ts1.dbf',
      '/u01/app/oracle/oradata/orcl/datafile3.dbf',
      '/u01/app/oracle/oradata/orcl/datafile4.dbf',
      '/u01/app/oracle/oradata/orcl/datafile5.dbf',
      '/u01/app/oracle/oradata/orcl/datafilebig_1.dfb',
      '/u01/app/oracle/oradata/orcl/ts2.dbf',
      '/u01/app/oracle/oradata/orcl/ts3.dbf',
      '/u01/app/oracle/oradata/orcl/tbsp_1.dbf'
    CHARACTER SET ZHS16GBK
    ;
    
    -- Commands to re-create incarnation table
    -- Below log names MUST be changed to existing filenames on
    -- disk. Any one log file from each branch can be used to
    -- re-create incarnation records.
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_1_%u_.arc';
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_1_%u_.arc';
    -- ALTER DATABASE REGISTER LOGFILE '/u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_1_%u_.arc';
    -- Recovery is required if any of the datafiles are restored backups,
    -- or if the last shutdown was not normal or immediate.
    RECOVER DATABASE USING BACKUP CONTROLFILE
    
    -- Database can now be opened zeroing the online logs.
    ALTER DATABASE OPEN RESETLOGS;
    
    -- No tempfile entries found to add.
    --
    
    SYS@orcl>


              8:文件的恢复(环境:归档模式   )

    ---进入sqlplus 模式
    [oracle@localhost rlwrap-0.37]$ rlwrap sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 15:40:52 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    Connected to an idle instance.
    ---启动该数据库
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    Database opened.
    ---查看日志归档模式信息
    SYS@orcl> archive log list;
    Database log mode              No Archive Mode
    Automatic archival             Disabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     1
    Current log sequence           2
    --关闭数据库 
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    --进入 mount 状态
    SYS@orcl> startup mount;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    --切换日志为归档模式
    SYS@orcl> alter database archivelog;
    
    Database altered.
    --打开数据库
    SYS@orcl> alter database open;
    
    Database altered.
    ---查看日志归档模式
    SYS@orcl> archive log list;
    Database log mode              Archive Mode
    Automatic archival             Enabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     1
    Next log sequence to archive   2
    Current log sequence           2
    SYS@orcl>
    SYS@orcl>


    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/controlfile_bak/
    20180503  20180506  controlfile_bak_20180227  controlfile_bak_20180227_1
    
    SYS@orcl> ho ls  /home/oracle/oracle_system_files_back/controlfile_bak/20180506
    c1.ctl  con_txt
    
    SYS@orcl> ho mkdir  /home/oracle/oracle_system_files_back/controlfile_bak/20180506/ctl_08_bak
    
    
    SYS@orcl> alter database backup controlfile to '/home/oracle/oracle_system_files_back/controlfile_bak/20180506/ctl_08_bak/controlfile01.ctl';
    
    Database altered.
    
    SYS@orcl>  ho ls   /home/oracle/oracle_system_files_back/controlfile_bak/20180506/ctl_08_bak
    controlfile01.ctl
    
    SYS@orcl>


    SYS@orcl> select name from v$controlfile;
    
    NAME
    --------------------------------------------------------------------------------
    /u01/app/oracle/oradata/orcl/control01.ctl
    /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_2018050
    3.ctl
    
    
    SYS@orcl> ho rm /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl> ho rm /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    SYS@orcl> ho rm /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    SYS@orcl>


    SYS@orcl> startup force
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    ORA-00205: error in identifying control file, check alert log for more info
    
    
    SYS@orcl> select status from v$instance;
    
    STATUS
    ------------
    STARTED
    
    SYS@orcl>


    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180506/ctl_08_bak/controlfile01.ctl  /u01/app/oracle/oradata/orcl/control01.ctl
    
    SYS@orcl>  ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180506/ctl_08_bak/controlfile01.ctl  /u01/app/oracle/fast_recovery_area/orcl/control02.ctl
    
    SYS@orcl>   ho cp /home/oracle/oracle_system_files_back/controlfile_bak/20180506/ctl_08_bak/controlfile01.ctl     /home/oracle/oracle_system_files_back/controlfile_bak/20180503/control01_20180503.ctl
    
    SYS@orcl> alter database mount;
    
    Database altered.
    
    SYS@orcl> select status from v$instance;
    
    STATUS
    ------------
    MOUNTED
    
    SYS@orcl> alter database open;
    alter database open
    *
    ERROR at line 1:
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    
    
    SYS@orcl>
    SYS@orcl> recover database;
    ORA-00283: recovery session canceled due to errors
    ORA-01610: recovery using the BACKUP CONTROLFILE option must be done
    
    
    SYS@orcl> recover database using backup controlfile;
    ORA-00279: change 6655592 generated at 05/06/2018 15:23:30 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_2_%u_.arc
    ORA-00280: change 6655592 for thread 1 is in sequence #2
    
    
    Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
    



    打开一个新的窗口 为:窗口2;原编辑操作的窗口为窗口1;

    -----窗口2:操作信息如下:

    [oracle@localhost controlfile_bak]$ sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 16:00:15 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    
    SYS@orcl> archive log list;
    Database log mode              Archive Mode
    Automatic archival             Enabled
    Archive destination            USE_DB_RECOVERY_FILE_DEST
    Oldest online log sequence     1
    Next log sequence to archive   2
    Current log sequence           2
    SYS@orcl> select * from v$log;
    
        GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC
    ---------- ---------- ---------- ---------- ---------- ---------- ---
    STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME
    ---------------- ------------- --------- ------------ ---------
             1          1          1   52428800        512          2 YES
    INACTIVE               6632675 06-MAY-18      6652682 06-MAY-18
    
             4          1          0   52428800        512          2 YES
    UNUSED                       0                      0
    
             3          1          0   52428800        512          1 YES
    UNUSED                       0                      0
    
    
        GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC
    ---------- ---------- ---------- ---------- ---------- ---------- ---
    STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME
    ---------------- ------------- --------- ------------ ---------
             2          1          2   52428800        512          1 NO
    CURRENT                6652682 06-MAY-18   2.8147E+14
    
    
    SYS@orcl> select GROUP#,MEMBER from v$logfile;
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
             1
    /u01/app/oracle/oradata/orcl/redo01.log
    
             1
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.lo
    g
    
             3
    /u01/app/oracle/oradata/orcl/redo03.log
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
    
             2
    /u01/app/oracle/oradata/orcl/redo02.log
    
             4
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228.log
    
             4
    
        GROUP#
    ----------
    MEMBER
    --------------------------------------------------------------------------------
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228_1.log
    
    
    6 rows selected.
    
    SYS@orcl>


    ----返回到窗口 1中执行以下操作:

    SYS@orcl> recover database using backup controlfile;
    ORA-00279: change 6655592 generated at 05/06/2018 15:23:30 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_2_%u_.arc
    ORA-00280: change 6655592 for thread 1 is in sequence #2
    
    
    Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
    /u01/app/oracle/oradata/orcl/redo02.log
    Log applied.
    Media recovery complete.
    SYS@orcl> alter database open resetlogs;
    
    Database altered.
    
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size                  1346052 bytes
    Variable Size             394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers                5861376 bytes
    Database mounted.
    Database opened.
    SYS@orcl>










              9: 与控制文件相关的数据字典

    SYS@orcl> desc v$database;
     Name                                      Null?    Type
     ----------------------------------------- -------- ----------------------------
     DBID                                               NUMBER
     NAME                                               VARCHAR2(9)
     CREATED                                            DATE
     RESETLOGS_CHANGE#                                  NUMBER
     RESETLOGS_TIME                                     DATE
     PRIOR_RESETLOGS_CHANGE#                            NUMBER
     PRIOR_RESETLOGS_TIME                               DATE
     LOG_MODE                                           VARCHAR2(12)
     CHECKPOINT_CHANGE#                                 NUMBER
     ARCHIVE_CHANGE#                                    NUMBER
     CONTROLFILE_TYPE                                   VARCHAR2(7)
     CONTROLFILE_CREATED                                DATE
     CONTROLFILE_SEQUENCE#                              NUMBER
     CONTROLFILE_CHANGE#                                NUMBER
     CONTROLFILE_TIME                                   DATE
     OPEN_RESETLOGS                                     VARCHAR2(11)
     VERSION_TIME                                       DATE
     OPEN_MODE                                          VARCHAR2(20)
     PROTECTION_MODE                                    VARCHAR2(20)
     PROTECTION_LEVEL                                   VARCHAR2(20)
     REMOTE_ARCHIVE                                     VARCHAR2(8)
     ACTIVATION#                                        NUMBER
     SWITCHOVER#                                        NUMBER
     DATABASE_ROLE                                      VARCHAR2(16)
     ARCHIVELOG_CHANGE#                                 NUMBER
     ARCHIVELOG_COMPRESSION                             VARCHAR2(8)
     SWITCHOVER_STATUS                                  VARCHAR2(20)
     DATAGUARD_BROKER                                   VARCHAR2(8)
     GUARD_STATUS                                       VARCHAR2(7)
     SUPPLEMENTAL_LOG_DATA_MIN                          VARCHAR2(8)
     SUPPLEMENTAL_LOG_DATA_PK                           VARCHAR2(3)
     SUPPLEMENTAL_LOG_DATA_UI                           VARCHAR2(3)
     FORCE_LOGGING                                      VARCHAR2(3)
     PLATFORM_ID                                        NUMBER
     PLATFORM_NAME                                      VARCHAR2(101)
     RECOVERY_TARGET_INCARNATION#                       NUMBER
     LAST_OPEN_INCARNATION#                             NUMBER
     CURRENT_SCN                                        NUMBER
     FLASHBACK_ON                                       VARCHAR2(18)
     SUPPLEMENTAL_LOG_DATA_FK                           VARCHAR2(3)
     SUPPLEMENTAL_LOG_DATA_ALL                          VARCHAR2(3)
     DB_UNIQUE_NAME                                     VARCHAR2(30)
     STANDBY_BECAME_PRIMARY_SCN                         NUMBER
     FS_FAILOVER_STATUS                                 VARCHAR2(22)
     FS_FAILOVER_CURRENT_TARGET                         VARCHAR2(30)
     FS_FAILOVER_THRESHOLD                              NUMBER
     FS_FAILOVER_OBSERVER_PRESENT                       VARCHAR2(7)
     FS_FAILOVER_OBSERVER_HOST                          VARCHAR2(512)
     CONTROLFILE_CONVERTED                              VARCHAR2(3)
     PRIMARY_DB_UNIQUE_NAME                             VARCHAR2(30)
     SUPPLEMENTAL_LOG_DATA_PL                           VARCHAR2(3)
     MIN_REQUIRED_CAPTURE_CHANGE#                       NUMBER
    
    SYS@orcl> desc v$controlfile;
     Name                                      Null?    Type
     ----------------------------------------- -------- ----------------------------
     STATUS                                             VARCHAR2(7)
     NAME                                               VARCHAR2(513)
     IS_RECOVERY_DEST_FILE                              VARCHAR2(3)
     BLOCK_SIZE                                         NUMBER
     FILE_SIZE_BLKS                                     NUMBER
    
    SYS@orcl> desc v$controlfile_record_section
     Name                                      Null?    Type
     ----------------------------------------- -------- ----------------------------
     TYPE                                               VARCHAR2(28)
     RECORD_SIZE                                        NUMBER
     RECORDS_TOTAL                                      NUMBER
     RECORDS_USED                                       NUMBER
     FIRST_INDEX                                        NUMBER
     LAST_INDEX                                         NUMBER
     LAST_RECID                                         NUMBER
    
    SYS@orcl> desc v$parameter
     Name                                      Null?    Type
     ----------------------------------------- -------- ----------------------------
     NUM                                                NUMBER
     NAME                                               VARCHAR2(80)
     TYPE                                               NUMBER
     VALUE                                              VARCHAR2(4000)
     DISPLAY_VALUE                                      VARCHAR2(4000)
     ISDEFAULT                                          VARCHAR2(9)
     ISSES_MODIFIABLE                                   VARCHAR2(5)
     ISSYS_MODIFIABLE                                   VARCHAR2(9)
     ISINSTANCE_MODIFIABLE                              VARCHAR2(5)
     ISMODIFIED                                         VARCHAR2(10)
     ISADJUSTED                                         VARCHAR2(5)
     ISDEPRECATED                                       VARCHAR2(5)
     ISBASIC                                            VARCHAR2(5)
     DESCRIPTION                                        VARCHAR2(255)
     UPDATE_COMMENT                                     VARCHAR2(255)
     HASH                                               NUMBER
    
    SYS@orcl>

    -




    四:联机重做日志文件概述

    image

    注:日志的主要作用就是:恢复(介质恢复,实例恢复)


    1:使用联机重做日志文件

    image


    2:Oracle 数据库如何写入到联机重做日志

        1:简介

    image


        2:联机重做日志切换

    image

            image


        3:Redo log 和归档

    image


        4:联机重做日志文件的多个副本

    image


    3:联机重做日志的结构

    image


    4:日志管理策略

    image

       1:重做日志组的个数

    image

       2:重做日志文件的复用

    image


       3:重做日志文件的位置

    image

       4:重做日志文件的大小

    image



       5:实验:


    image

    image

    image

    image

              1:和日志文件有关的数据字典


    SYS@orcl> select * from v$logfile;
    
        GROUP# STATUS  TYPE
    ---------- ------- -------
    MEMBER
    --------------------------------------------------------------------------------
    IS_
    ---
             1        ONLINE
    /u01/app/oracle/oradata/orcl/redo01.log
    NO
    
             1        ONLINE
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.lo
    g
    
        GROUP# STATUS  TYPE
    ---------- ------- -------
    MEMBER
    --------------------------------------------------------------------------------
    IS_
    ---
    NO
    
             3        ONLINE
    /u01/app/oracle/oradata/orcl/redo03.log
    NO
    
             2        ONLINE
    
        GROUP# STATUS  TYPE
    ---------- ------- -------
    MEMBER
    --------------------------------------------------------------------------------
    IS_
    ---
    /u01/app/oracle/oradata/orcl/redo02.log
    NO
    
             4        ONLINE
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228.log
    NO
    
        GROUP# STATUS  TYPE
    ---------- ------- -------
    MEMBER
    --------------------------------------------------------------------------------
    IS_
    ---
    
             4        ONLINE
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228_1.log
    NO
    
    
    6 rows selected.
    
    SYS@orcl>


    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS
    ---------- ---------- --------------- ---------- --- ----------------
    FIRST_CHANGE# NEXT_CHANGE#
    ------------- ------------
             1         1               50          2 NO  CURRENT
          6656013  2.8147E+14
    
             2         0               50          1 YES UNUSED
                0    0
    
             3         0               50          1 YES UNUSED
                0    0
    
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS
    ---------- ---------- --------------- ---------- --- ----------------
    FIRST_CHANGE# NEXT_CHANGE#
    ------------- ------------
             4         0               50          2 YES UNUSED
                0    0
    
    
    SYS@orcl>

    image

    SYS@orcl> select group#,status ,member from v$Logfile;
    
        GROUP# STATUS
    ---------- -------
    MEMBER
    --------------------------------------------------------------------------------
             1
    /u01/app/oracle/oradata/orcl/redo01.log
    
             1
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.lo
    g
    
             3
    /u01/app/oracle/oradata/orcl/redo03.log
    
        GROUP# STATUS
    ---------- -------
    MEMBER
    --------------------------------------------------------------------------------
    
             2
    /u01/app/oracle/oradata/orcl/redo02.log
    
             4
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228.log
    
             4
    
        GROUP# STATUS
    ---------- -------
    MEMBER
    --------------------------------------------------------------------------------
    /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180
    228_1.log
    
    
    6 rows selected.
    
    SYS@orcl>

    image


              2:创建日志组:

           

                                    alter database add logfile ‘路径’ size 大小;

    -----新增日志组和单个日志组成员
    SYS@orcl> ho ls //home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228  logfile_bak_20180228_1
    
    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/
    SYS@orcl> alter database add logfile '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log' size 50m;
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/
    redo20180506.log
    
    SYS@orcl>


    SYS@orcl> set linesize 600;
    SYS@orcl> col member for a350;
    SYS@orcl> select group#,member from v$logfile;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
    
    7 rows selected.
    
    SYS@orcl>
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          2 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
    
    SYS@orcl>




                                    alter database  add logfile    (‘路径’,'路径’) size  大小;   

    -----新增有多个日志成员的日志组:


    SYS@orcl> ho mkdir /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/
    log_group6  redo20180506.log
    
    SYS@orcl> alter database add logfile ('/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log','/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log') size 50m;
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/
    log_group6  redo20180506.log
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6
    redo20180506_01.log  rode20180506_02.log
    
    SYS@orcl> select group#,member from v$logfile;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
    
    9 rows selected.
    
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          2 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
    
    6 rows selected.
    
    SYS@orcl>


                                    alter database  add logfile group n  (‘路径’,'路径’) size  大小;   

    SYS@orcl>  alter database add logfile group 7 ('/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log','/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log') size 50m;
    
    Database altered.
    
    SYS@orcl> select group#,member from v$logfile;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    11 rows selected.
    
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          2 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    
    SYS@orcl>


                                    alter database add logfile group n ‘路径’ size 大小;

    SYS@orcl> alter database add logfile group 8 '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506_05.log' size 50m;
    
    Database altered.
    
    SYS@orcl> select group#,member from v$logfile;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
             8 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506_05.log
    
    12 rows selected.
    
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          2 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
             8         0               50          1 YES UNUSED               0            0
    
    8 rows selected.
    
    SYS@orcl>




    3:删除日志组


                                    alter database drop logfile group n  ;

    注意:

    • 当日志组处于 current 或者 active 状态时时不能被删除的
    • 当数据库下只有2个日志组时,是不能删除日志组
    • 一个实例至少需要两个联机日志文件组,如果仅仅有两个日志组,则不能删除


    SYS@orcl> alter database drop logfile group 8 ;
    
    Database altered.
    
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          2 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    
    SYS@orcl> select group#,member from v$logfile;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    11 rows selected.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/
    log_group6  redo20180506_05.log  redo20180506.log
    
    SYS@orcl> ho rm /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506_05.log
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/
    log_group6  redo20180506.log
    
    SYS@orcl>

    注:删除日志组并删除日志组成员的文件


    4: 创建日志成员



                                     alter database add logfile member ‘路径’to group n;

    SYS@orcl> select group#,member from v$logfile;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    11 rows selected.
    
    SYS@orcl> alter database add logfile member '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_06.log'to group 2;
    
    Database altered.
    
    SYS@orcl> ho ls /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6
    redo20180506_01.log  redo20180506_03.log  rode20180506_02.log  rode20180506_04.log  rode20180506_06.log
    
    
    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /u01/app/oracle/oradata/orcl/redo01.log
             2 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_06.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    12 rows selected.
    
    SYS@orcl>



    5:删除成员:


                                     alter database drop logfile member ‘路径’;

    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          3 NO  CURRENT            6656013   2.8147E+14
             2         0               50          2 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    
    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /u01/app/oracle/oradata/orcl/redo01.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             2 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_06.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    13 rows selected.
    ------当前日志组的日志成员是不可以删除的
    SYS@orcl> alter database drop logfile member '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log';
    alter database drop logfile member '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log'
    *
    ERROR at line 1:
    ORA-01609: log 1 is the current log for thread 1 - cannot drop members
    ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/orcl/redo01.log'
    ORA-00312: online log 1 thread 1: '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
    ORA-00312: online log 1 thread 1: '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log'
    


    -----删除日志组2 的1个日志成员
    SYS@orcl> alter database drop logfile member '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_06.log';
    
    Database altered.
    
    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /u01/app/oracle/oradata/orcl/redo01.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    12 rows selected.
    
    
    
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          3 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    
    SYS@orcl>


    6:日志文件切换:

    • 手动切换    alter system switch logfile;


    • 自动切换



    7:清空

       

    清空:可以理解为 先删除日至组 然后再创建日至组;


    • 会产生归档:  alter database clear logfile group n ;


    • 不会生成归档:alter  database clear unarchived logfile group n;



    注意:

    • 当前正在使用的日至组不能再open状态下进行清空。怎么清空当前正在使用的日志组?

          1 ):切换

             2): 将数据库切换到mount状态的组才能被清空。


    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          3 NO  CURRENT            6656013   2.8147E+14
             2         0               50          1 YES UNUSED               0            0
             3         0               50          1 YES UNUSED               0            0
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    
    SYS@orcl> alter database clear logfile group 1;
    alter database clear logfile group 1
    *
    ERROR at line 1:
    ORA-01624: log 1 needed for crash recovery of instance orcl (thread 1)
    ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/orcl/redo01.log'
    ORA-00312: online log 1 thread 1: '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log'
    ORA-00312: online log 1 thread 1: '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log'
    
    
    SYS@orcl> alter database clear logfile group 2;
    
    Database altered.
    
    SYS@orcl>


    8:重定向或者重名命名日志文件

    1:关闭数据库  shutdown  the database

    2: 拷贝         copy the redo log files to the new location

    3:启动数据库到mount状态   startup the database ,mount,but do not open it;

    4:重名命  rename the redo log members;

    5:打开数据库       open the database for normal operation


    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /u01/app/oracle/oradata/orcl/redo01.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    12 rows selected.
    
    SYS@orcl> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    
    
    SYS@orcl> ho cp /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02_1.log
    
    SYS@orcl> startup mount;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size          1346052 bytes
    Variable Size     394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers        5861376 bytes
    Database mounted.
    SYS@orcl> alter database rename file '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02.log' to '/home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02_1.log';
    
    Database altered.
    
    SYS@orcl> alter database open ;
    
    Database altered.
    
    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /u01/app/oracle/oradata/orcl/redo01.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02_1.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    12 rows selected.
    
    SYS@orcl>



    9:日志文件的恢复

    1:当前日志组或者活动的日志组丢失的恢复(日志组仅有且只有1个日志成员)

          开启掩藏参数:启动隐含参数_allow_resetlogs_corruption ,该参数指定数据库在启动的时候跳过一致性检查

           alter system set “_allow_resetlogs_corruption”=true scope=spfile;

     

        去掉 该隐含参数: alter system reset “_allow_resetlogs_corruption “ scope=spfile sid=’*’;

               recover database until cancel;

         输入 cancel;

    ---查看 日志组信息:从查询结果来看:当前日志为第三号日志组  且只有1个日志成员
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          3 YES ACTIVE             6656013  6671613
             2         2               50          1 YES ACTIVE             6671613  6671616
             3         3               50          1 NO  CURRENT            6671616   2.8147E+14
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    ---查看日志组和日志成员路径信息
    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /u01/app/oracle/oradata/orcl/redo01.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02_1.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    12 rows selected.
    ---删除 日志组三的成员文件
    SYS@orcl> ho rm /u01/app/oracle/oradata/orcl/redo03.log
    --重启数据库
    SYS@orcl> startup force;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size          1346052 bytes
    Variable Size     394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers        5861376 bytes
    Database mounted.
    ORA-00313: open failed for members of log group 3 of thread 1
    ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'
    ORA-27037: unable to obtain file status
    Linux Error: 2: No such file or directory
    Additional information: 3
    ---清空日志组 
    SYS@orcl> alter database clear logfile group3;
    alter database clear logfile group3
                                 *
    ERROR at line 1:
    ORA-02236: invalid file name
    
    ---打开数据库隐藏参数: "_allow_resetlogs_corruption"
    SYS@orcl> alter system set "_allow_resetlogs_corruption"=true scope=spfile;
    
    System altered.
    
    --关闭数据库
    SYS@orcl> shutdown immediate;
    ORA-01109: database not open
    
    
    Database dismounted.
    ORACLE instance shut down.
    -启动数据库
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size          1346052 bytes
    Variable Size     394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers        5861376 bytes
    Database mounted.
    ORA-00313: open failed for members of log group 3 of thread 1
    ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'
    ORA-27037: unable to obtain file status
    Linux Error: 2: No such file or directory
    Additional information: 3
    
    ---退出
    SYS@orcl> exit
    Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    ---进入 sqlplus 工具
    [oracle@localhost controlfile_bak]$ rlwrap sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 21:17:33 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    
    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    --关闭数据库 
    SYS@orcl> shutdown immediate;
    ORA-01109: database not open
    
    
    Database dismounted.
    ORACLE instance shut down.
    --启动数据库
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size          1346052 bytes
    Variable Size     394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers        5861376 bytes
    Database mounted.
    ORA-00313: open failed for members of log group 3 of thread 1
    ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'
    ORA-27037: unable to obtain file status
    Linux Error: 2: No such file or directory
    Additional information: 3
    
     ----
    SYS@orcl> recover database until cancel;
    ORA-00279: change 6671616 generated at 05/06/2018 21:11:01 needed for thread 1
    ORA-00289: suggestion :
    /u01/app/oracle/fast_recovery_area/ORCL/archivelog/2018_05_06/o1_mf_1_3_%u_.arc
    ORA-00280: change 6671616 for thread 1 is in sequence #3
    
    
    Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
    --跳过
    cancel
    ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
    ORA-01194: file 1 needs more recovery to be consistent
    ORA-01110: data file 1: '/u01/app/oracle/oradata/orcl/system01.dbf'
    
    
    ORA-01112: media recovery not started
    
    --关闭数据库
    SYS@orcl> shutdown immediate;
    ORA-01109: database not open
    
    
    Database dismounted.
    ORACLE instance shut down.
    --启动数据库
    SYS@orcl> startup
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size          1346052 bytes
    Variable Size     394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers        5861376 bytes
    Database mounted.
    ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
    
    ---重新打开数据库 
    SYS@orcl> alter database open resetlogs;
    alter database open resetlogs
    *
    ERROR at line 1:
    ORA-00603: ORACLE server session terminated by fatal error
    ORA-00600: internal error code, arguments: [2662], [0], [6671627], [0],
    [6671641], [12583040], [], [], [], [], [], []
    ORA-00600: internal error code, arguments: [2662], [0], [6671626], [0],
    [6671641], [12583040], [], [], [], [], [], []
    ORA-01092: ORACLE instance terminated. Disconnection forced
    ORA-00600: internal error code, arguments: [2662], [0], [6671624], [0],
    [6671641], [12583040], [], [], [], [], [], []
    Process ID: 12873
    Session ID: 191 Serial number: 3
    
    ---退出 sqlplus   
    SYS@orcl> exit;
    Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options
    ---进入slqplus 
    [oracle@localhost controlfile_bak]$ rlwrap sqlplus / as sysdba;
    
    SQL*Plus: Release 11.2.0.3.0 Production on Sun May 6 21:26:26 2018
    
    Copyright (c) 1982, 2011, Oracle.  All rights reserved.
    
    Connected to an idle instance.
    
    SYS@orcl> set linesize 700;
    SYS@orcl> col member for a350;
    --重启数据库
    SYS@orcl> startup force;
    ORACLE instance started.
    
    Total System Global Area  523108352 bytes
    Fixed Size          1346052 bytes
    Variable Size     394266108 bytes
    Database Buffers          121634816 bytes
    Redo Buffers        5861376 bytes
    Database mounted.
    Database opened.
    ---查看日志组信息
    SYS@orcl> select group#,member from v$logfile order by group#;
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_07.log
             1 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo04.log
             1 /u01/app/oracle/oradata/orcl/redo01.log
             2 /u01/app/oracle/oradata/orcl/redo02.log
             3 /u01/app/oracle/oradata/orcl/redo03.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228.log
             4 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180228/redo20180228_1.log
             5 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/redo20180506.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_01.log
             6 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_02_1.log
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/redo20180506_03.log
    
        GROUP# MEMBER
    ---------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
             7 /home/oracle/oracle_system_files_back/logfile_bak/logfile_bak_20180506/log_group6/rode20180506_04.log
    
    12 rows selected.
    
    SYS@orcl> select group#,sequence#,bytes/1024/1024,members,archived,status,first_change#,next_change# from v$log;
    
        GROUP#  SEQUENCE# BYTES/1024/1024    MEMBERS ARC STATUS           FIRST_CHANGE# NEXT_CHANGE#
    ---------- ---------- --------------- ---------- --- ---------------- ------------- ------------
             1         1               50          3 YES INACTIVE           6671617  6691627
             2         2               50          1 YES INACTIVE           6691627  6712000
             3         3               50          1 NO  CURRENT            6712000   2.8147E+14
             4         0               50          2 YES UNUSED               0            0
             5         0               50          1 YES UNUSED               0            0
             6         0               50          2 YES UNUSED               0            0
             7         0               50          2 YES UNUSED               0            0
    
    7 rows selected.
    
    SYS@orcl>

      



    2:非当前的日志组丢失的恢复(日志组仅有1个成员)

    恢复方法: 清空日志组即可

        alter database clear unarchived logfile group 1;



    3: 日志组内的其中一个成员丢失的恢复(日志组有多个成员)

      恢复方法:清空日志组即可
















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  • 原文地址:https://www.cnblogs.com/ios9/p/8965571.html
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