Re: New Non-ASM Standby Trying to use ASM during recovery
- From: Andrew Kerber <andrew.kerber@xxxxxxxxx>
- To: don@xxxxxxxxx
- Date: Mon, 19 Aug 2013 11:05:14 -0500
This may sound like a dumb question, but are your db_file_name_convert and
log_file_name convert parameters set? When I did this, I was allowed a
couple of hours of downtime, and I used the backup as copy command, and
recover copy methodology to minimize downtime.
On Mon, Aug 19, 2013 at 10:58 AM, Don Seiler <don@xxxxxxxxx> wrote:
> Oracle 11.2.0.3 on RH6 x86_64.
> We have a database on ASM. We want to migrate to filesystem storage on same
> host (Oracle ZFS). Recommended path from Oracle is to create a standby and
> then do a failover when ready. Simple enough you'd think.
>
> Standby has all reference to ASM diskgroups removed, and convert parameters
> set appropriately. Take a new backup including archivelogs and also a
> backup standby controlfile. The "duplicate target database for standby"
> performs the restore phase perfectly fine. When the media recovery phase
> starts, I see it tries to mount the diskgroup that the primary uses for
> ASM. However it fails to do so (plenty of errors to alert log), then
> recovery fails and the instance is left in mount mode. Subsequent attempt
> to run "recover database" or even "crosscheck archivelog all" run into the
> same ASM errors.
>
> The one odd thing I see is the reference to the srvctl resource name for
> that diskgroup:
>
> Mon Aug 19 10:41:35 2013
> ERROR: failed to establish dependency between database prod_zfs and
> diskgroup resource ora.FRA.dg
>
> However I never registered prod_zfs in srvctl, and it still isn't listed
> when I run "srvctl config database". Obviously the prod configuration has
> the dependency on +FRA, and it is on the same machine. Is srvctl confusing
> the two? Perhaps due to same DBID (as is necessary with primary/standby)?
>
> Wondering if any of you have seen this.
>
>
> --
> Don Seiler
> http://www.seiler.us
>
>
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
--
Andrew W. Kerber
'If at first you dont succeed, dont take up skydiving.'
--
//www.freelists.org/webpage/oracle-l
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