RE: How to convert RAC database to single Instance Database
- From: "Rognes, Sten" <Sten.Rognes@xxxxxxxxxx>
- To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 30 Aug 2004 18:05:01 -0700
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
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Tim Gorman
Sent: Monday, August 30, 2004 5:00 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: How to convert RAC database to single Instance Database
Qaiser,
Did you contact Support, or Sales, for that answer? :-)
Admittedly, running non-RAC on a Veritas clustered file-system is unusual
(i.e. falls into the "why would you do this?" department), but I can't see
why it can't be supported. Except for all the bells and whistles and
complications and overhead of a clustered file-system, it's just a
file-system, right?
<SNIP>
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
Other related posts:
