Re: Shadow Image....
- From: Tim Gorman <tim@xxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Sat, 09 Oct 2004 18:17:26 -0600
The rumors of the conventional backup's demise are absolutely true and the
corpse should have been buried a long time ago...
RMAN works quite well with those techniques (i.e. file-system snapshot,
BCVs, shadow image, etc). First CATALOG DATAFILECOPY the snapped images to
enter knowledge of their existence into the RMAN catalog, and then use
BACKUP DATAFILECOPY to backup those copies onto tape. Admittedly not as
straightforward as simply issuing a BACKUP DATABASE command, but that's what
Perl and shell scripts are for, but the restore and recovery is no
different. You get corruption checking and the ability to validate
recoverability -- things that old-style scripted backups don't provide.
The DBAs still have to put the database into and out of BACKUP mode during
the snapshot, but getting it to tape and -- much more importantly -- having
an easy time during restore and recovery -- is best done with RMAN.
Yep, deader than roadkill. Better bury it before it stinks up the place...
on 10/9/04 4:38 AM, Hemant K Chitale at hkchital@xxxxxxxxxxxxxx wrote:
>
>
> RMAN cannot be used to create backups which rely on
> SnapShot/SnapClone/BCV/ShadowImage technologies.
> DBAs must still put the databases in Backup mode and create the "copied"
> image of the database.
>
> Hemant
>
>
> At 02:57 AM Saturday, Bobak, Mark wrote:
> Carel-Jan,
>
> It's interesting that Oracle provided this enhancement.
>
> The message I thought I was hearing (with the introduction of RMAN,
> and then with the requirement to use RMAN if you go w/ ASM), was
> that conventional backups were *eventually* going away.
>
> Perhaps the rumors of the conventional backup's demise have been
> a bit exaggerated.....
>
> -Mark
>
>
>
> Hemant K Chitale
> http://web.singnet.com.sg/~hkchital
>
>
>
>
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