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RMAN Crosscheck Backup device type SBT using multiple channels

2919136Feb 19 2015


Using RMAN11.2.0.3 with DDBoost and filesperset=1 we generate lots of backupsets doing a backup.

It takes a Long time to crosscheck the backups. Each backuppiece takes a second to be checked.

Allocation of more channels does not solve the problem:

RMAN> run {

allocate channel 'B' type SBT_TAPE trace 5 parms 'BLKSIZE=1048576,SBT_LIBRARY=/oracle/TUE/112_64/lib/libddobk.so,ENV=(STORAGE_UNIT=boost,BACKUP_HOST=dd02g.rz.sys.aok.de,ORACLE_HOME=/oracle/TUE/112_64)';

crosscheck backup;

release channel B;

}

Start: Thu Feb 12 14:28:08 CET 2015

Ende: Thu Feb 12 14:33:25 CET 2015

RMAN> run {

allocate channel 'B1' type SBT_TAPE trace 5 parms 'BLKSIZE=1048576,SBT_LIBRARY=/oracle/TUE/112_64/lib/libddobk.so,ENV=(STORAGE_UNIT=boost,BACKUP_HOST=dd02g.rz.sys.aok.de,ORACLE_HOME=/oracle/TUE/112_64)';

allocate channel 'B2' type SBT_TAPE trace 5 parms 'BLKSIZE=1048576,SBT_LIBRARY=/oracle/TUE/112_64/lib/libddobk.so,ENV=(STORAGE_UNIT=boost,BACKUP_HOST=dd02g.rz.sys.aok.de,ORACLE_HOME=/oracle/TUE/112_64)';

crosscheck backup;

release channel;

}

Start: Thu Feb 12 14:48:01 CET 2015

Ende: Thu Feb 12 14:55:05 CET 2015

Any Ideas

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Locked on Mar 19 2015
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