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

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

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Martin Berger         http://berxblog.blogspot.com




> 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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