Re: On-lining ASM Disk Groups

From: Guillermo Alan Bort <cicciuxdba_at_gmail.com>
Date: Fri, 31 May 2013 17:28:40 -0300
Message-ID: <CAJ2dSGTq3sn3mD67b1mOzuUykTRHH2fB7FZH_GSQow5wuNGi+w_at_mail.gmail.com>

alter diskgroup <diskgroup name|all> MOUNT; is the correct command to online disks. You need to look at the alert log for the ASM instance to find out why the online command failed.

you may also want to have a look at the startup order for ASM, asmlib, multipath.

If this doesn't give you the answer, please describe how you installed this environment, which version you are using, whether you are using multiple version on the same ASM, how the disks are configured and presented to ASM as well as the portions of the alert log for the database and ASM instances starting a few minutes before the crash and spanning until the service was restored.

hth
Cheers

Alan.-

On Fri, May 31, 2013 at 4:36 PM, MacGregor, Ian A. <ian_at_slac.stanford.edu>wrote:

> I setup a single instance database with a DATA and an FRA disk group.
> Both groups use external redundancy. We had a power outage here
> yesterday, and the system crashed. When trying to restart the database, it
> was discovered the the disk groups were offline. I tried various commands
> in the ASM database itself to online the disks, but each time an error was
> thrown. However when I checked again both disk groups were online. It
> seems unlikely anything I did would have on-lined the disk groups as an
> error was thrown for everything I tried I checked with my system
> administrator and she had done nothing.
>
> Is alter diskgroup the command that should be used in this situation, or
> am I way off.
>
>
>
> Ian A. MacGregor
> SLAC National Accelerator Laboratory--
> http://www.freelists.org/webpage/oracle-l
>
>
>

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Received on Fri May 31 2013 - 22:28:40 CEST