Re: Thoughts on crs installation on HP-UX

From: Maureen English <>
Date: Thu, 22 Jan 2009 15:26:54 -0900
Message-ID: <>

Thanks Gopal,

Yes, 10gR2, and yes, no RAC.

Re #2, why is having CRS run on top of Service Guard/VCS not a good idea. I'm not a system administrator, but I did question the SA working on this and was told that we needed CRS in order for the clustering software to communicate with the Oracle Databases. We didn't talk about RAC.

Re #4, does this mean that Service Guard/VCS are essentially the same as CAA for Tru64? For our current systems we use the Tru64 clustering software to manage which node each database comes up on. Since we do not have RAC databases, we've never installed any Oracle clustering software.

This is a bit confusing....

  • Maureen

K Gopalakrishnan wrote:
> Maureen,
> There is no information about Version. So I assume 10gR2.
> Is it safe to assume you have 5 nodes on HP-UX/Veritas Cluster and
> want to covert that to Oracle (CRS) clusterware cluster?
> Also there is no mention of RAC (Though you say you will have 6-10 Non
> RAC databases), and if that is the case, why do you need CRS on top of
> VCS?
> I am bad at making assumptions,but here some facts.
> 1. You don't need VCS or Service Guard for RAC. RAC requires Oracle
> Clusterware (CRS)
> 2. Having said that, you can install/run CRS on top of Service
> Guard/VCS though it is not a best practice
> 3. You can have rolling upgrade of Oracle CRS (though all patches are
> not rolling upgradeable!)
> 4. You don't need to install CRS on top of existing clusterware if you
> are not running RAC
> 5. CRS is mandatory for RAC irrespective of OS/hardware
> -Gopal

Received on Thu Jan 22 2009 - 18:26:54 CST

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