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

--
LSC



On 8/29/07, Khan, Muhammad S <Muhammad.Khan@xxxxxx> 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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