恢复acitve日志组有两种情况
- 一种是acitve日志组的其中一个成员损坏
- 一种是acitve日志组所有日志成员都损坏
- 使用rman恢复acitve日志组的其中一个成员损坏
- 1、查看当前日志组状态以及日志组成员
sys@TEST1107> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE#
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- -------------
FIRST_TIME NEXT_CHANGE# NEXT_TIME
------------------ ------------ ------------------
1 1 22 52428800 512 2 NO CURRENT 1153754
06-NOV-13 2.8147E+14
2 1 20 52428800 512 2 YES INACTIVE 1132964
06-NOV-13 1153041 06-NOV-13
3 1 21 52428800 512 2 YES ACTIVE 1153041
06-NOV-13 1153754 06-NOV-13
sys@TEST1107> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_
---------- ------- ------- -------------------------------------------------- ---
3 ONLINE /u01/app/oracle/oradata/test1107/redo03.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01a.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02a.log NO
3 ONLINE /u01/app/oracle/oradata/test1107/redo03a.log NO
6 rows selected.
- 2. ACTIVE 组日志是第3组，OS下删除第三组的其中一个成员
[oracle@rtest ~]$ rm /u01/app/oracle/oradata/test1107/redo03.log
- 3、模拟断电，然后起库，数据库可正常打开
sys@TEST1107> shutdown abort
ORACLE instance shut down.
sys@TEST1107> startup
ORACLE instance started.
Total System Global Area 1269366784 bytes
Fixed Size 2227984 bytes
Variable Size 805306608 bytes
Database Buffers 452984832 bytes
Redo Buffers 8847360 bytes
Database mounted.
Database opened.
- 4、查看alert日志
Errors in file /u01/app/oracle/diag/rdbms/test1107/test1107/trace/test1107_lgwr_23973.trc:
ORA-00313: open failed for members of log group 3 of thread 1
ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/test1107/redo03.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
- 5、查看数据库打开后的日志组以及日志成员状态，发现刚才删掉的那个日志成员的状态为INVALID 。
sys@TEST1107> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE#
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- -------------
FIRST_TIME NEXT_CHANGE# NEXT_TIME
------------------ ------------ ------------------
1 1 22 52428800 512 2 YES INACTIVE 1153754
06-NOV-13 1174308 06-NOV-13
2 1 23 52428800 512 2 NO CURRENT 1174308
06-NOV-13 2.8147E+14
3 1 21 52428800 512 2 YES INACTIVE 1153041
06-NOV-13 1153754 06-NOV-13
sys@TEST1107> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_
---------- ------- ------- -------------------------------------------------- ---
3 INVALID ONLINE /u01/app/oracle/oradata/test1107/redo03.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01a.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02a.log NO
3 ONLINE /u01/app/oracle/oradata/test1107/redo03a.log NO
6 rows selected.
- 6、解决办法为drop后重新添加
sys@TEST1107> alter database drop logfile member '/u01/app/oracle/oradata/test1107/redo03.log';
Database altered.
sys@TEST1107> alter database add logfile member '/u01/app/oracle/oradata/test1107/redo03.log' to group 3;
Database altered.
- 7、再次查看日志组以及日志组成员，发现还是INVALID状态。
sys@TEST1107> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE#
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- -------------
FIRST_TIME NEXT_CHANGE# NEXT_TIME
------------------ ------------ ------------------
1 1 22 52428800 512 2 YES INACTIVE 1153754
06-NOV-13 1174308 06-NOV-13
2 1 23 52428800 512 2 NO CURRENT 1174308
06-NOV-13 2.8147E+14
3 1 21 52428800 512 2 YES INACTIVE 1153041
06-NOV-13 1153754 06-NOV-13
sys@TEST1107> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_
---------- ------- ------- -------------------------------------------------- ---
3 INVALID ONLINE /u01/app/oracle/oradata/test1107/redo03.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01a.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02a.log NO
3 ONLINE /u01/app/oracle/oradata/test1107/redo03a.log NO
6 rows selected.
- 8、切换日志，使其强制使用，再次查看，日志成员已恢复正常。
sys@TEST1107>
sys@TEST1107> alter system switch logfile;
System altered.
sys@TEST1107> /
System altered.
sys@TEST1107> /
System altered.
sys@TEST1107> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_
---------- ------- ------- -------------------------------------------------- ---
3 ONLINE /u01/app/oracle/oradata/test1107/redo03.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01a.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02a.log NO
3 ONLINE /u01/app/oracle/oradata/test1107/redo03a.log NO
6 rows selected.
- 使用rman恢复acitve日志组的所有成员损坏
- 1、查看目前日志组以及日志成员的状态
sys@TEST1107> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE#
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- -------------
FIRST_TIME NEXT_CHANGE# NEXT_TIME
------------------ ------------ ------------------
1 1 25 52428800 512 2 YES INACTIVE 1175094
06-NOV-13 1175097 06-NOV-13
2 1 26 52428800 512 2 YES ACTIVE 1175097
06-NOV-13 1178906 06-NOV-13
3 1 27 52428800 512 2 NO CURRENT 1178906
06-NOV-13 2.8147E+14
sys@TEST1107> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_
---------- ------- ------- -------------------------------------------------- ---
3 ONLINE /u01/app/oracle/oradata/test1107/redo03.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01a.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02a.log NO
3 ONLINE /u01/app/oracle/oradata/test1107/redo03a.log NO
6 rows selected.
- 2、删除ACTIVE日志组所有成员
[oracle@rtest ~]$ rm /u01/app/oracle/oradata/test1107/redo02.log
[oracle@rtest ~]$ rm /u01/app/oracle/oradata/test1107/redo02a.log
- 3、模拟断电，再打开数据库，报错
sys@TEST1107> shutdown abort
ORACLE instance shut down.
sys@TEST1107> startup
ORACLE instance started.
Total System Global Area 1269366784 bytes
Fixed Size 2227984 bytes
Variable Size 805306608 bytes
Database Buffers 452984832 bytes
Redo Buffers 8847360 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 1466
Session ID: 96 Serial number: 3
- 4、查看alert告警日志
Wed Nov 06 11:43:25 2013
ARC3 started with pid=23, OS id=1610
ARC1: Archival started
ARC2: Archival started
ARC2: Becoming the 'no FAL' ARCH
ARC2: Becoming the 'no SRL' ARCH
ARC1: Becoming the heartbeat ARCH
Errors in file /u01/app/oracle/diag/rdbms/test1107/test1107/trace/test1107_lgwr_1565.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/test1107/redo02a.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/test1107/redo02.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/test1107/test1107/trace/test1107_lgwr_1565.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/test1107/redo02a.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/test1107/redo02.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/test1107/test1107/trace/test1107_ora_1582.trc:
ORA-00313: open failed for members of log group 1 of thread
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/test1107/redo02.log'
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/test1107/redo02a.log'
USER (ospid: 1582): terminating the instance due to error 313
System state dump requested by (instance=1, osid=1582), summary=[abnormal instance termination].
System State dumped to trace file /u01/app/oracle/diag/rdbms/test1107/test1107/trace/test1107_diag_1555.trc
Dumping diagnostic data in directory=[cdmp_20131106114326], requested by (instance=1, osid=1582), summary=[abnormal instance termination].
Instance terminated by USER, pid = 1582
- 5、直接关闭不行，退出重新以mount模式登进
sys@TEST1107> shutdown abort
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist
sys@TEST1107> quit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@rtest ~]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.3.0 Production on Wed Nov 6 11:54:02 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to an idle instance.
idle> shutdown abort
ORACLE instance shut down.
idle> startup mount
ORACLE instance started.
Total System Global Area 1269366784 bytes
Fixed Size 2227984 bytes
Variable Size 805306608 bytes
Database Buffers 452984832 bytes
Redo Buffers 8847360 bytes
Database mounted.
- 6、使用隐藏参数，进行不一致的恢复
idle> alter system set "_allow_resetlogs_corruption"=true scope=spfile;
System altered.
- 7、重启，mount方式起库，使隐藏参数生效
idle> shutdown immediate
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
idle> startup mount
ORACLE instance started.
Total System Global Area 1269366784 bytes
Fixed Size 2227984 bytes
Variable Size 805306608 bytes
Database Buffers 452984832 bytes
Redo Buffers 8847360 bytes
Database mounted.
- 7、使用基于取消的数据库恢复
idle> recover database until cancel;
Media recovery complete.
- 8、使用resetlogs方式打开数据库
idle> alter database open resetlogs;
Database altered.
- 9、查看恢复后的日志组及其成员
sys@TEST1107> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE#
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- -------------
FIRST_TIME NEXT_CHANGE# NEXT_TIME
------------------ ------------ ------------------
1 1 1 52428800 512 2 NO CURRENT 1199286
06-NOV-13 2.8147E+14
2 1 0 52428800 512 2 YES UNUSED 0
0
3 1 0 52428800 512 2 YES UNUSED 0
0
sys@TEST1107> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_
---------- ------- ------- -------------------------------------------------- ---
3 ONLINE /u01/app/oracle/oradata/test1107/redo03.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01.log NO
1 ONLINE /u01/app/oracle/oradata/test1107/redo01a.log NO
2 ONLINE /u01/app/oracle/oradata/test1107/redo02a.log NO
3 ONLINE /u01/app/oracle/oradata/test1107/redo03a.log NO
6 rows selected.
- 10、切换日志，更改日志组状态
sys@TEST1107> alter system switch logfile;
System altered.
sys@TEST1107> alter system switch logfile;
System altered.
sys@TEST1107> alter system switch logfile;
System altered.
sys@TEST1107> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE#
---------- ---------- ---------- ---------- ---------- ---------- --- ---------------- -------------
FIRST_TIME NEXT_CHANGE# NEXT_TIME
------------------ ------------ ------------------
1 1 4 52428800 512 2 NO CURRENT 1200058
06-NOV-13 2.8147E+14
2 1 2 52428800 512 2 YES INACTIVE 1200052
06-NOV-13 1200055 06-NOV-13
3 1 3 52428800 512 2 YES INACTIVE 1200055
06-NOV-13 1200058 06-NOV-13
sys@TEST1107>