Re: Oracle RAC Patch Application

hi

with patches (not patchsets) you have several options

1. full outage, that is shutting down all instances and you patch in a node the patch will be propagated to the rest of nodes
2. partial outage, you can choose patch 5 nodes per time, apply in one of 5 nodes the patch is propagated to the other 4 automatically
3. rolling upgrade, one node per time

quite a few patches supports rolling upgrade nowdays, with rolling upgrade patches you can choose from these three methods otheriwse the only choice is method 1

thanks

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LSC



On 8/29/07, Khan, Muhammad S <Muhammad.Khan_at_ca.com> wrote:


>

>  Hi Gurus.

>

>

>

> I haven't done much of the work on Oracle RAC, but I was having a serious

> debate about Oracle RAC verses SqlServer 2005 clustering option (trying to

> defend Oracle) with my Project Manager, when he raised the point that if you

> have 50 instances in Oracle RAC, and you have to apply a patch, you'll have

> to apply patch on every single instance. Whereas in Sqlserver 2005, you

> would apply the patch on one instance and it will be done on all of them,

> just like that.

>

>

>

> I was not sure about his argument cuz I've never applied a patch on Oracle

> RAC, but those of you who have experienced this, may have a better comment

> on this. Will you please share this here so that I get my concepts clear

> about Oracle RAC before getting engaged into any such debate again?

>

>

>

> Thanks.

>

>

>


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