ORA-00742 ORA-00312故障恢复

11.2.0.4版本数据库启动报ORA-00742 ORA-00312错误

Fri Feb 25 15:02:27 2022
ALTER DATABASE   MOUNT
Successful mount of redo thread 1, with mount id 2001521283
Database mounted in Exclusive Mode
Lost write protection disabled
Completed: ALTER DATABASE   MOUNT
Fri Feb 25 15:02:31 2022
ALTER DATABASE OPEN
Beginning crash recovery of 1 threads
 parallel recovery started with 11 processes
Started redo scan
Aborting crash recovery due to error 742
Errors in file /u01/app/oracle/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_ora_98720.trc:
ORA-00742: Log read detects lost write in thread %d sequence %d block %d
ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/xifenfei/redo01.log'
Errors in file /u01/app/oracle/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_ora_98720.trc:
ORA-00742: Log read detects lost write in thread %d sequence %d block %d
ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/xifenfei/redo01.log'
ORA-742 signalled during: ALTER DATABASE OPEN...

现场人员进行错误恢复尝试

Fri Feb 25 15:17:17 2022
ALTER DATABASE RECOVER    CANCEL  
Fri Feb 25 15:17:17 2022
Errors in file /u01/app/oracle/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_pr00_130027.trc:
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/xifenfei/system01.dbf'
ORA-1547 signalled during: ALTER DATABASE RECOVER    CANCEL  ...
ALTER DATABASE RECOVER CANCEL 
ORA-1112 signalled during: ALTER DATABASE RECOVER CANCEL ...

通过一些人工修复异常redo之后,数据库顺利直接open成功

ALTER DATABASE RECOVER  database  
Media Recovery Start
 started logmerger process
Parallel Media Recovery started with 12 slaves
Sat Feb 26 09:45:07 2022
Recovery of Online Redo Log: Thread 1 Group 1 Seq 5281 Reading mem 0
  Mem# 0: /u01/app/oracle/oradata/xifenfei/redo01.log
Sat Feb 26 09:45:08 2022
Media Recovery Complete (xifenfei)
Completed: ALTER DATABASE RECOVER  database  
Sat Feb 26 09:45:25 2022
alter database open
Beginning crash recovery of 1 threads
 parallel recovery started with 11 processes
Started redo scan
Completed redo scan
 read 4861 KB redo, 0 data blocks need recovery
Started redo application at
 Thread 1: logseq 5281, block 2, scn 262332375
Recovery of Online Redo Log: Thread 1 Group 1 Seq 5281 Reading mem 0
  Mem# 0: /u01/app/oracle/oradata/xifenfei/redo01.log
Completed redo application of 0.00MB
Completed crash recovery at
 Thread 1: logseq 5281, block 9725, scn 262353916
 0 data blocks read, 0 data blocks written, 4861 redo k-bytes read
Initializing SCN for created control file
Database SCN compatibility initialized to 3
Warning - High Database SCN: Current SCN value is 262353917, threshold SCN value is 0
If you have not previously reported this warning on this database, 
please notify Oracle Support so that additional diagnosis can be performed.
Sat Feb 26 09:45:25 2022
Thread 1 advanced to log sequence 5282 (thread open)
Thread 1 opened at log sequence 5282
  Current log# 2 seq# 5282 mem# 0: /u01/app/oracle/oradata/xifenfei/redo02.log
Successful open of redo thread 1
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Sat Feb 26 09:45:25 2022
SMON: enabling cache recovery
[111600] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:69076924 end:69077284 diff:360 (3 seconds)
Dictionary check beginning
Tablespace 'TEMP' #3 found in data dictionary,
but not in the controlfile. Adding to controlfile.
Dictionary check complete
Verifying file header compatibility for 11g tablespace encryption..
Verifying 11g file header compatibility for tablespace encryption completed
Database Characterset is ZHS16GBK
No Resource Manager plan active
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
Sat Feb 26 09:45:26 2022
QMNC started with pid=20, OS id=116832 
LOGSTDBY: Validating controlfile with logical metadata
LOGSTDBY: Validation complete
Completed: alter database open

数据库正常open,数据0丢失,数据库可以直接使用