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

From: Martin Berger <>
Date: Mon, 24 Nov 2008 21:17:01 +0100
Message-Id: <>

Hi Keith,

I have to second Carels and Michaels meanings. Your desire is highly complex and multi dimensional. So you will not get any straight forward answer.

In one of my prior lives I had to promote and support Multi Master Replication. If someone uses this wise, he can achieve a zero-downtime environment.
But be warned: You need a tremendous engineering work and still really good skilled operational DBAs with enough time to take care of.

I have never checked, wether or not streams can provide the same functionality. Maybe it's worth checking.

just some ideas, might they help,

Martin Berger

> 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"?


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Received on Mon Nov 24 2008 - 14:17:01 CST

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