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