Re: Recovery scenario
- From: Prasad <p4cldba@xxxxxxxxx>
- To: niall.litchfield@xxxxxxxxx
- Date: Thu, 31 Jan 2008 12:12:05 -0800
"Why would oracle ask for a file that is from 5am when the backup finished
at 1 30am?"
Can this be due to the backup controlfile reading the last scn of online
redo logs . ??
On Thu, Jan 31, 2008 at 7:17 AM, Niall Litchfield <
niall.litchfield@xxxxxxxxx> wrote:
> On Jan 31, 2008 2:58 PM, Hemant K Chitale <hkchital@xxxxxxxxxxxxxx> wrote:
>
> >
> >
> > A "using Backup Controlfile" implicitly means
> > "the controlfile is older then the datafiles"
> >
>
> I've always thought of it as 'ignore the scn in the controlfile' not the
> controlfile is older..
>
>
> > the RECOVER command then actually _builds_ the archivelog
> > file names [using log_archive_dest and log_archive_format].
>
>
> It wasn't the file *name *per se but the *creation time* as in the message
>
>
> ORA-00279: change 11805815756 generated at *01/30/2008 05:00:15* needed
> for thread 1
>
>
> Where we were told that the backups including the controlfile backup were
> from several hours *before* 5 in the morning. The recovery process seems
> to know when this change was created - but I don't really see how it can -
> unless as Andrew suggested the controlfile was actually from *after* 5am.
> I'm sure I used to know this once, but I'm feeling really old and stupid
> right now.
>
> Niall
>
>
> --
> Niall Litchfield
> Oracle DBA
> http://www.orawin.info
>
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