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  • 使用RMAN备份控制文件(control file)和系统参数文件(spfile)

    1、Use the CONFIGURE CONTROLFILE AUTOBACKUP command to eanable

    设置RMAN配置文件,将CONFIGE CONTROLFILE AUTOBACKUP 为ON状态,可以是实现控制文件的备份。如果CONFIGURE CONTROLFILE AUTOBACKUP 为OFF,那么在备份system表空间的时候,也会备份congrol file。

    2、when enabled,RMAN automatically performs a back up of the control file and current server parameter file after BACKUP or COPY commands.

    3、Back ups also occur after structural changes to the database .

    4、Backup is given a default name.

    备份Controlfile与system parameter file的方法

    (一)、设置如下配置参数,实现controlfile与system parameter file的备份 

    RMAN> show all;
    
    RMAN configuration parameters for database with db_unique_name POLI are:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
    CONFIGURE BACKUP OPTIMIZATION OFF; # default
    CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
    CONFIGURE CONTROLFILE AUTOBACKUP ON;
    CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
    CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
    CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
    CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
    CONFIGURE MAXSETSIZE TO UNLIMITED; # default
    CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
    CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
    CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
    CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
    CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/oracle/dbs/snapcf_poli.f'; # default

     (二)、执行命令backup current controlfile,实现controlfile与spfile的备份;(单独执行controlfile与spfile的命令)

    RMAN> backup current controlfile;
    
    Starting backup at 23-MAR-13
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backup set
    channel ORA_DISK_1: specifying datafile(s) in backup set
    including current control file in backup set
    channel ORA_DISK_1: starting piece 1 at 23-MAR-13
    channel ORA_DISK_1: finished piece 1 at 23-MAR-13
    piece handle=/u01/flash_recovery_area/POLI/backupset/2013_03_23/o1_mf_ncnnf_TAG20130323T234359_8nvmg18j_.bkp tag=TAG20130323T234359 comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03
    Finished backup at 23-MAR-13
    
    Starting Control File Autobackup at 23-MAR-13
    piece handle=/u01/flash_recovery_area/POLI/autobackup/2013_03_23/o1_mf_n_810863044_8nvmg4dv_.bkp comment=NONE
    Finished Control File Autobackup at 23-MAR-13

    (三)、使用include子句,实现control file的备份

    RMAN> backup datafile 4 include current controlfile;
    
    Starting backup at 23-MAR-13
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backup set
    channel ORA_DISK_1: specifying datafile(s) in backup set
    input datafile file number=00004 name=/u01/oradata/poli/users01.dbf
    channel ORA_DISK_1: starting piece 1 at 23-MAR-13
    channel ORA_DISK_1: finished piece 1 at 23-MAR-13
    piece handle=/u01/flash_recovery_area/POLI/backupset/2013_03_23/o1_mf_nnndf_TAG20130323T234751_8nvmo843_.bkp tag=TAG20130323T234751 comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03
    channel ORA_DISK_1: starting full datafile backup set
    channel ORA_DISK_1: specifying datafile(s) in backup set
    including current control file in backup set
    channel ORA_DISK_1: starting piece 1 at 23-MAR-13
    channel ORA_DISK_1: finished piece 1 at 23-MAR-13
    piece handle=/u01/flash_recovery_area/POLI/backupset/2013_03_23/o1_mf_ncnnf_TAG20130323T234751_8nvmod9y_.bkp tag=TAG20130323T234751 comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
    Finished backup at 23-MAR-13
    
    Starting Control File Autobackup at 23-MAR-13
    piece handle=/u01/flash_recovery_area/POLI/autobackup/2013_03_23/o1_mf_n_810863277_8nvmofjy_.bkp comment=NONE
    Finished Control File Autobackup at 23-MAR-13

    (四)、使用SQL命令备份controlfile

    RMAN> sql "alter database backup controlfile  to ''/tmp/poli_df.bak''";
    
    sql statement: alter database backup controlfile  to ''/tmp/poli_df.bak''
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  • 原文地址:https://www.cnblogs.com/arcer/p/2977904.html
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