| Rman [message #53665] |
Thu, 03 October 2002 20:53  |
shenjie
Messages: 4
Registered: October 2002
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Junior Member |
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When using recovery manager, do not put tablespaces in backup mode using the alter tablespace....begin backup command.
why?
i guess maybe Rman put the tablespace in hot backup status.
but i am not sure.
who can tell me why?
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| Re: Rman [message #53675 is a reply to message #53665] |
Fri, 04 October 2002 11:46  |
Grant
Messages: 578
Registered: January 2002
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Senior Member |
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It doesn't so it doesn't require the overhead with putting a TS in back mode. Remember hot backups do an OS copy command whereas Oracle/RMAN does not. RMAN will verify the blocks have been written correctly or will error out. It will also make sure it is consistant. It also copies as Oracle blocks and not OS blocks.
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