List most recent rman database backups on target database sqlplus with: set pages 9999 lines 132 ALTER SESSION SET nls_date_format = ‘Dy DD-Mon-YYYY HH24:MI:SS’ ; SELECT b.checkpoint_time , b.incremental_level , COUNT(*) FROM v$backup_datafile b JOIN v$datafile f ON f.file# = b.file# JOIN v$tablespace ts ON f.ts# = ts.ts# WHERE ts.included_in_database_backup = ‘YES’ AND b.checkpoint_time > […]
Read More Rman list most recent backupsIf data has been removed due to user error, it can be easily and quickly be brought back without the need for restores, using flashback query: CREATE TABLE temp_rescue AS SELECT * FROM owner.table AS OF TIMESTAMP TO_TIMESTAMP ( ‘Thu 14-Nov-2013 13:00:00’ , ‘Dy DD-Mon-YYYY HH24:MI:SS’ ) ; Or if the entire table has been […]
Read More Flashback query alternative to point in time recoveryRman point in time restore: rman connect target / connect catalog user/password@catalog_database run { shutdown immediate ! now take an OS copy of current control file and current online redo logs in case need to regress startup mount set until time “to_date(‘Mon 04-Nov-2013 09:00:00′,’Dy DD-Mon-YYYY HH24:MI:SS’)” ; restore database preview ; — optional, to check […]
Read More RMAN point in time restoreRman catalog can be upgraded to a higher version than its hosting database oracle version. This is useful if you want to back up new versions of oracle without changing the oracle version on the database used to host the rman catalog. To do this, run the following commands from the higher version oracle database: […]
Read More Upgrade rman catalog – no need to upgrade oracle database versionAs root dsmc or, for more complex configurations, specify an optfile: dsmc -optfile=/opt/tivoli/tsm/client/ba/bin/dsm-ora.opt List backup files: tsm> q backup “/oracle/*” -subdir=yes -inactive Restore: tsm> restore “/oracle/mydb/*” /oracle/ -subdir=yes -pick Note how the second mention of directory path ommits the lowest directory. tsm> + # to select all tsm> o # ok, start restore
Read More IBM Tivoli restores using dsmc# Delete files older than 15 minutes find /ORA_DISK/redoarch/ -name ‘arch_*.dbf’ -mmin +15 -delete #Delete files older than 2 days 50 8 * * * find /ORA_DISK/redoarch/ -name ‘arch_*.dbf’ -mtime +2 -delete Old versions of unix find do not have the -delete option, so instead: # Delete files older than 15 minutes find /ORA_DISK/redoarch/ -name […]
Read More Find delete old filesSwitch a RAC database into archivelog mode: srvctl stop database -d dbname startup mount –only one instance alter database archivelog alter database open srvctl start database -d dbname –this will start the remaining instances on the cluster And switch it into noarchivelog mode: srvctl stop database -d dbname startup mount –only one instance alter database […]
Read More RAC alter database archivelogSample restore from command line Tivoli Storage Manager. Run as root. ps -ef | grep dsm #here look to see if ‘optfile’ is set cd /mydir dsmc -optfile=/opt/tivoli/tsm/client/ba/bin/dsm-ora.opt tsm> restore /mydir/*.dbf -inactive -pick tsm> 1 #here choose which file number you want tsm> 2 #choose another file if needed tsm> o #o=’ok’ tsm> quit You […]
Read More Tivoli Storage Manager simple restorerun { set until time “to_date(’21-OCT-2010 14:45:00′,’DD-MON-YYYY HH24:MI:SS’)”; restore database ; recover database ; alter database open resetlogs ; } (H/t Stefan Knecht)
Read More RMAN set until time recoverSo I had: ORA-08103: object no longer exists being reported on SQL affecting one application table. But that table existed ok in dba_tables, could be described ok, and selects restricted to its indexed columns returned data ok. Suspicion was some sort of data block corruption. Rman backup logs had not reported any corrpution, but dbverify […]
Read More Data block corruption cleared with alter system flush buffer_cache