Re: Interesting RMAN duplicate problem.
Date: Wed, 27 Jan 2010 13:42:03 +0000
Message-ID: <5e317f311001270542l16c7e500n1580652915c3c736_at_mail.gmail.com>
Hi Norman,
So you are saying all of the datafiles are at the same SCN? If you took a hot backup, that would be possible if there was no db activity while it was going on, but even so maybe Oracle "knows" in some other way that it was an inconsistent backup (some kind of marker in the file headers) and needs to apply the next archive log number that was current during the backup. Since 9i rmans default action is to switch logfiles during the backup, so that changes going on during it are caught. If you do not have those logs, it may be hard to get the database open.
Good luck
Pete
On Wed, Jan 27, 2010 at 1:11 PM, Taylor, Chris David < ChrisDavid.Taylor_at_ingrambarge.com> wrote:
> I know there's a hidden parameter to force open a database but I'm not sure
> if it has the same effect on an RMAN recovery as it does on a non-RMAN
> recovery. I assume it would.
>
> The parameter is:
>
> NAME VALUE DEFLT TYPE DESCRIPTION
> _allow_resetlogs_corruption FALSE TRUE boolean allow resetlogs
> even if it will cause corruption
>
>
> There is also this one that might be of interest
> _allow_read_only_corruption FALSE TRUE boolean allow read-only
> open even if database is corrupt
>
>
> These are ONLY as a last resort to allow you access to your data ...
>
>
> Chris Taylor
> Sr. Oracle DBA
> Ingram Barge Company
> Nashville, TN 37205
> Office: 615-517-3355
> Cell: 615-354-4799
> Email: chris.taylor_at_ingrambarge.com
>
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> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]
> On Behalf Of Dunbar, Norman
> Sent: Wednesday, January 27, 2010 6:30 AM
> To: Martin Bach
> Cc: Niall Litchfield; ORACLE-L
> Subject: RE: Interesting RMAN duplicate problem.
>
> Morning Martin,
>
> >> I like MOS note "How to recover and open the database if the
> >> archivelog required for recovery is either missing, lost or
> corrupted? [ID
> >> 465478.1]" which might be of help.
> Thanks. Yes, I had seen that one when researching this problem.
> Unfortunately, I get stumped by this bit in Option 2:
>
> "However, if we restored from an online or hot backup, then we may not
> be able to open the database, because we still need to apply the
> archivelogs generated during the said backup in order to synchronize the
> SCN of the datafiles before we can normally open the database."
>
> All my datafile headers are synchronised - which makes like
> "interesting".
>
>
> Cheers,
> Norman.
>
> Norman Dunbar
> Contract Oracle DBA
> CIS Engineering Services
> Internal : 7 28 2051
> External : 0113 231 2051
>
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-- Regards Pete -- http://www.freelists.org/webpage/oracle-lReceived on Wed Jan 27 2010 - 07:42:03 CST