RMAN REPAIR FAILURE
command is used to repair database failures identified by the Data Recovery Advisor.
The recommended workflow is to run LIST
FAILURE
to display failures, ADVISE FAILURE
to display repair options, and RMAN REPAIR FAILURE
to fix the failures.
Repairing Failures
This example repairs all failures known to the Data Recovery Advisor. The example repairs two failures: missing data files and a data file with corrupt blocks. After the recovery, RMAN asks whether it should open the database (user-entered text is in bold).
RMAN> LIST FAILURE; List of Database Failures ========================= Failure ID Priority Status Time Detected Summary ---------- -------- --------- ------------- ------- 142 HIGH OPEN 23-APR-13 One or more non-system datafiles are missing 101 HIGH OPEN 23-APR-13 Datafile 1: '/disk1/oradata/prod/system01.dbf' contains one or more corrupt blocks RMAN> ADVISE FAILURE; List of Database Failures ========================= Failure ID Priority Status Time Detected Summary ---------- -------- --------- ------------- ------- 142 HIGH OPEN 23-APR-13 One or more non-system datafiles are missing 101 HIGH OPEN 23-APR-13 Datafile 1: '/disk1/oradata/prod/system01.dbf' contains one or more corrupt blocks analyzing automatic repair options; this may take some time using channel ORA_DISK_1 analyzing automatic repair options complete Mandatory Manual Actions ======================== no manual actions available Optional Manual Actions ======================= 1. If file /disk1/oradata/prod/users01.dbf was unintentionally renamed or moved, restore it Automated Repair Options ======================== Option Repair Description ------ ------------------ 1 Restore and recover datafile 28; Perform block media recovery of block 56416 in file 1 Strategy: The repair includes complete media recovery with no data loss Repair script: /disk1/oracle/log/diag/rdbms/prod/prod/hm/reco_660500184.hm RMAN> REPAIR FAILURE; Strategy: The repair includes complete media recovery with no data loss Repair script: /disk1/oracle/log/diag/rdbms/prod/prod/hm/reco_475549922.hm contents of repair script: # restore and recover datafile alter database datafile 28 offline; restore datafile 28; recover datafile 28; alter database datafile 28 online; # block media recovery recover datafile 1 block 56416; Do you really want to execute the above repair (enter YES or NO)? YES executing repair script sql statement: alter database datafile 28 offline Starting restore at 23-APR-13 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00028 to /disk1/oradata/prod/users01.dbf channel ORA_DISK_1: reading from backup piece /disk2/PROD/backupset/2013_04_18/o1_mf_nnndf_TAG20130418T182042_32fjzd3z_.bkp channel ORA_DISK_1: piece handle=/disk2/PROD/backupset/2013_04_18/o1_mf_nnndf_TAG20130418T182042_32fjzd3z_.bkp tag=TAG20130418T182042 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:03 Finished restore at 23-APR-13 Starting recover at 23-APR-13 using channel ORA_DISK_1 starting media recovery media recovery complete, elapsed time: 00:00:01 Finished recover at 23-APR-13 sql statement: alter database datafile 28 online Starting recover at 23-APR-13 using channel ORA_DISK_1 searching flashback logs for block images until SCN 429690 finished flashback log search, restored 1 blocks starting media recovery media recovery complete, elapsed time: 00:00:03 Finished recover at 23-APR-13 repair failure complete
Previewing a Repair
The following example previews a repair of the first repair option of the most recent ADVISE FAILURE
command in the current session. The sample output for the LIST FAILURE
and ADVISE FAILURE
commands is not shown in the example.
RMAN> LIST FAILURE; . . . RMAN> ADVISE FAILURE; . . . RMAN> REPAIR FAILURE PREVIEW; Strategy: The repair includes complete media recovery with no data loss Repair script: /disk1/oracle/log/diag/rdbms/prod/prod/hm/reco_3200987003.hm contents of repair script: # block media recovery recover datafile 1 block 56416;
You can use SPOOL
with REPAIR FAILURE ... PREVIEW
to write a repair script to a file. You can then edit this script and execute it manually. The following example spools a log a repair preview to /tmp/repaircmd.dat
.
RMAN> SPOOL LOG TO '/tmp/repaircmd.dat'; RMAN> REPAIR FAILURE PREVIEW; RMAN> SPOOL LOG OFF;
Also See: