Re: Availability during software/hardware upgrade.

From: Stu Charlton <stuartcharlton_at_hotmail.com>
Date: 29 Oct 2002 05:40:43 -0800
Message-ID: <f8851c43.0210290540.b32225d@posting.google.com>

"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 - 07:40:43 CST