This is moving into the realms of RMAN performance tuning so you may get better advise from an Oracle board on this.
Your default settings look ok to me, you could try testing with different values for CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 4; to see which gives the best performance. Also all of the settings you provided can be overwritten by the RMAN script, can you post this too?
| "Atif Munir" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED] 22/03/2006 06:44
|
To: veritas-bu@mailman.eng.auburn.edu cc: Subject: [Veritas-bu] rman backups are slow |
I am unable to get more than 50MB/sec for rman backups. Although
filesystem backups are running 100MB/sec.
Is there any conf changes required in the rman. I have rman setting like this.
=========================================================
RMAN> show all;
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE SBT_TAPE TO
'%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 4;
CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 4;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default
CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' PARMS "BLKSIZE=1048576";
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO
'/oracle/product/9.2.0.4/dbs/snapcf_ebizprod.f'; # default
===================================================
_______________________________________________
Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
