Re: Availability during software/hardware upgrade.

From: Hemant K Chitale <hkchital_nospam_at_singnet_nospam.com.sg>
Date: Tue, 29 Oct 2002 22:09:40 +0800
Message-ID: <3DBE96A4.7299FD9E@singnet_nospam.com.sg>

I believe that RAC requires all 'N' nodes of the cluster to be upgraded together -- certainly so when you are applying a patchset.
Hemant

Stu Charlton wrote:
>
> "Howard J. Rogers" <aldeburgh_at_bigpond.com> wrote in message news:<8kit9.59670$g9.169403_at_newsfeeds.bigpond.com>...
>
> > Another idea would be to use RAC (Real Application Clusters). You could
> > have a two node RAC, take one of the nodes offline to patch it/upgrade
> > it/whatever, and then bring it back into the cluster. Do the same on the
> > other node, and you achieve truly non-zero downtime for the cluster as a
> > whole. Again, however, you can't cluster a Windows box with a Unix one, so
>
> Is this new in 9iR2? I was under the impression from the Oracle 9i
> RAC course that you can't do a rolling cluster upgrade like this - the
> whole cluster must be the same version.
>
> Cheers
> Stu
Received on Tue Oct 29 2002 - 08:09:40 CST