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Home -> Community -> Mailing Lists -> Oracle-L -> Re: How to convert RAC database to single Instance Database
Ah, that explains the swapping of the shared libraries! Thank you!
Problem is, the installation instruction (both Veritas's and Oracle's) do not explicitly instruct to save the old libraries; they just provide the exact "cp" commands to overwrite what's in "$ORACLE_HOME/lib". Awfully tempting to just copy/paste them. Out of habit, I saved the old ones to ".old" names first. Went through all this last week, but clearly I hadn't digested the meaning of all the steps yet. Thank goodness for old habits, though.
Thanks for the insight, Sten!
on 8/30/04 7:05 PM, Rognes, Sten at Sten.Rognes_at_schwab.com wrote:
>
> Got a couple of points to add to what Tim is saying:
>
> - Some of the libraries (IPC and ODM) in your Oracle Home were replaced with
> Veritas ones during installation. You should copy the original Oracle
> libraries back when
> you de-RAC prior to relinking.
> - My notes state that running non-RAC Oracle binaries on Veritas CFS is not
> supported. I did try this a year or so back, don't remember what exact ORA-
> you get, but you will notice. Can't find a reference to the explanation for
> this, but I believe it had something to do with a requirement for using the
> Veritas RAC ODM library for Oracle to do IO against a Veritas CFS. Either
> Veritas or Oracle should be able to get you the specifics. Veritas do have
> supported de-install path from DBE/AC to DBE which will bring you back to
> regular VxFS without compromising data. I've tested this backout path, and
> it works.
>
> One benefit running non-RAC with Veritas CFS would be that you'd minimize
> the time to do a failover in a VCS cluster since you wouldn't have to
> deport/import the disk groups when failing over to a different node.
> However, as Tim points out the overhead of a clustered file system might
> outweigh what's gained. (That is if this was a supported config.)
>
> Sten
-- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------Received on Mon Aug 30 2004 - 21:15:28 CDT
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