RE: Any-one know how to eliminate PLANNED downtime with Oracle RAC?

From: William Wagman <>
Date: Mon, 24 Nov 2008 08:58:38 -0800
Message-ID: <>

I believe you would have to use a combination of RAC and DataGuard to do this.

Bill Wagman
Univ. of California at Davis
IET Campus Data Center
(530) 754-6208
From: [] On Behalf Of Bort, Guillermo Sent: Monday, November 24, 2008 8:38 AM
To: Fahrenfort, Keith (PSS Americas Oracle); Subject: RE: Any-one know how to eliminate PLANNED downtime with Oracle RAC?

Well, I'm not sure this is entirely possible. Using rolling upgrades (which I understand were improved in 11g) could help, but from the base, there are *some* patches that would require downtime. However, this could be an interesting case. And if all else fails, you can always try contacting Oracle Consulting... or Tom Kyte trough ask tom...

Guillermo Alan Bort
DBA / DBA Main Team

EDS, an HP company
Arias 1851
Ciudad Autonoma de Buenos Aires (C1429DXC) Argentina

Tel: +54 11 4704-3132

We deliver on our commitments
so you can deliver on yours.

From: [] On Behalf Of Fahrenfort, Keith (HP Shared Solutions Architect for Oracle) Sent: Monday, November 24, 2008 2:26 PM
Subject: Any-one know how to eliminate PLANNED downtime with Oracle RAC?

Hi, I'm working with a customer running a critical web site on a 10gR2 RAC backend DB - they support hundreds of thousands of simultaneous connections at the "quietest" time.

They have expressed a desire for NO downtime during ANY changes to Oracle, particularly the application of Oracle patches and Oracle upgrades (both minor and major), etc.

Any thoughts? Who's "been there done that"?

Thanks! Regards!

Please let me know if you prefer to not receive email from me.

Keith Fahrenfort
Solutions Architect - Hewlett Packard
Solution Design Services for Oracle
Shared Solutions Architecture
HP Americas Solution Architecture
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Received on Mon Nov 24 2008 - 10:58:38 CST

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