RE: Hot Backup

Veronica, yes, you can do backups that way; however, it's preferable to place one tablespace at a time in backup mode, back up its files, then take it out of backup mode. The reason is that while a tablespace is in backup mode, all changes to objects in the tablespace cause entire Oracle blocks to be written to the redo log. If all of your tablespaces are in backup mode at the same time, redo writes for the tablespaces whose files are not currently being copied will be unnecessarily large.

Paul Baumgartel
MortgageSight Holdings, LLC
pbaumgartel_at_mortgagesight.com

-----Original Message-----
Sent: Wednesday, August 08, 2001 6:16 PM To: Multiple recipients of list ORACLE-L

Hi listers,
I'm plannig to test hot backups and I am wondering if I can place several tablespaces on backup mode, copy the datafiles and then end the backup mode for all datafiles at once.
Would that be ok? (of course backing up controlfie, and logs generated during backup)
Any of you have a unix script for hot backups and want to share it? thanks in advance!

Saludos,
Veronica Levin Enriquez
Administrador AIX
Compañía Cervecera de Nicaragua

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