RE: Concurrent Clusterware

From: Michael Fontana <>
Date: Thu, 6 Nov 2008 11:33:35 -0600 (CST)
Message-ID: <>

Thanks Dan. You picked up immediately as to where I was going with this, and yes, we are using VMs, at least at first, to build test and validate various upgrade scenarios. Saying whether this could be done or not without going the VM route definitely is the answer and saves us some time...  

From: Dan Norris [] Sent: Thursday, November 06, 2008 11:07 AM To:
Cc:; Subject: Re: Concurrent Clusterware  

This is why I use VMs (even for RAC/clusters)--for testing upgrades, resetting to the old version and repeating until it goes well.

On Thu, Nov 6, 2008 at 12:03 PM, Michael Fontana <> wrote:

Our thought was that we could use nodes (in a test scenario only) running different versions to practice upgrades and migrations of databases from one release to the next.  

Of course, if this works in practice, it would offer less downtime in production upgrades, right (similar to staging a single-node upgrade by installation of software only in advance).    

Received on Thu Nov 06 2008 - 11:33:35 CST

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