早上在启动测试数据库时，发现如下问题：数据库版本是11.2.0.3SQLgt; startupOracle instance started. Total System Global Ar

早上在启动测试数据库时，发现如下问题：

数据库版本是11.2.0.3

SQL> startup

Oracle instance started.

Total System Global Area 1653518336 bytes

Fixed Size 2228904 bytes

Variable Size 1140854104 bytes

Database Buffers 503316480 bytes

Redo Buffers 7118848 bytes

Database mounted.

ORA-03113: end-of-file on communication channel

Process ID: 8264

Session ID: 191 Serial number: 3

检查告警日志文件信息如下：

Fri Aug 24 09:52:27 2012

Completed: ALTER DATABASE MOUNT

Fri Aug 24 09:52:27 2012

ALTER DATABASE OPEN

Fri Aug 24 09:52:33 2012

Errors in file /u01/app/oracle/diag/rdbms/enmot2/enmot2/trace/enmot2_lgwr_8222.trc:

ORA-00322: log 2 of thread 1 is not current copy

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/enmot2/redo02b.log'

ORA-00322: log 2 of thread 1 is not current copy

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/enmot2/redo02a.log'

Errors in file /u01/app/oracle/diag/rdbms/enmot2/enmot2/trace/enmot2_lgwr_8222.trc:

ORA-00322: log 2 of thread 1 is not current copy

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/enmot2/redo02b.log'

ORA-00322: log 2 of thread 1 is not current copy

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/enmot2/redo02a.log'

Errors in file /u01/app/oracle/diag/rdbms/enmot2/enmot2/trace/enmot2_ora_8264.trc:

ORA-00322: log 1 of thread is not current copy

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/enmot2/redo02a.log'

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/enmot2/redo02b.log'

USER (ospid: 8264): terminating the instance due to error 322

Fri Aug 24 09:52:34 2012

System state dump requested by (instance=1, osid=8264), summary=[abnormal instance termination].

System State dumped to trace file /u01/app/oracle/diag/rdbms/enmot2/enmot2/trace/enmot2_diag_8212.trc

Dumping diagnostic data in directory=[cdmp_20120824095234], requested by (instance=1, osid=8264), summary=[abnormal instance termination].

Instance terminated by USER, pid = 8264

问题比较明显，日志镜像存在问题，由于测试库可以通过resetlog方式打开：

SQL> alter system set "_allow_resetlogs_corruption"=true scope=spfile;

System altered.

SQL> startup mount

ORACLE instance started.

Total System Global Area 1653518336 bytes

Fixed Size 2228904 bytes

Variable Size 1140854104 bytes

Database Buffers 503316480 bytes

Redo Buffers 7118848 bytes

Database mounted.

SQL> recover database until cancel;

Media recovery complete.

SQL> alter database open resetlogs;

Database altered.

此时告警日志信息如下：

Fri Aug 24 09:53:56 2012

alter database open resetlogs

ORA-1139 signalled during: alter database open resetlogs...

Fri Aug 24 09:54:27 2012

ALTER DATABASE RECOVER database until cancel

Media Recovery Start

started logmerger process

Parallel Media Recovery started with 4 slaves

Media Recovery Not Required

Completed: ALTER DATABASE RECOVER database until cancel

alter database open resetlogs

RESETLOGS is being done without consistancy checks. This may result

in a corrupted database. The database should be recreated.

RESETLOGS after incomplete recovery UNTIL CHANGE 1427077

Resetting resetlogs activation ID 1296798128 (0x4d4b91b0)

Fri Aug 24 09:56:11 2012

Setting recovery target incarnation to 2

Fri Aug 24 09:56:12 2012

Assigning activation ID 1297978010 (0x4d5d929a)

Thread 1 opened at log sequence 1

Current log# 1 seq# 1 mem# 0: /u01/app/oracle/oradata/enmot2/redo01a.log

Current log# 1 seq# 1 mem# 1: /u01/app/oracle/oradata/enmot2/redo01b.log

Successful open of redo thread 1

Fri Aug 24 09:56:15 2012

MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set

Fri Aug 24 09:56:15 2012

SMON: enabling cache recovery

[8371] Successfully onlined Undo Tablespace 2.

Undo initialization finished serial:0 start:68627054 end:68628914 diff:1860 (18 seconds)

Dictionary check beginning

Fri Aug 24 09:56:26 2012

Dictionary check complete

Verifying file header compatibility for 11g tablespace encryption..

Verifying 11g file header compatibility for tablespace encryption completed

Fri Aug 24 09:56:26 2012

SMON: enabling tx recovery

Database Characterset is ZHS16GBK

No Resource Manager plan active

replication_dependency_tracking turned off (no async multimaster replication found)

Starting background process QMNC

Fri Aug 24 09:56:36 2012

QMNC started with pid=20, OS id=8383

LOGSTDBY: Validating controlfile with logical metadata

Fri Aug 24 09:56:37 2012

LOGSTDBY: Validation complete

Fri Aug 24 09:56:47 2012

Completed: alter database open resetlogs

以上就是整个处理过程。

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