RE: Concurrent Clusterware

  • From: "Bobak, Mark" <Mark.Bobak@xxxxxxxxxxxx>
  • To: "kaygopal@xxxxxxxxx" <kaygopal@xxxxxxxxx>, "mfontana@xxxxxxxxxxx" <mfontana@xxxxxxxxxxx>
  • Date: Fri, 7 Nov 2008 02:09:03 -0500

I agree w/ K Gopalakrishnan, running more than one version of clusterware, 
while it may be technically possible, sounds like a really bad idea.  
Clusterware can be rolling upgraded, and newer versions of clusterware will 
support older versions of ASM database.  I currently have 11g CRS, 11g ASM 
running on a cluster with both 10g and 11g RAC databases running, with no 

I can't think of any reason to run two versions of CRS on the same cluster.

Hope that helps,


Mark J. Bobak
Senior Database Administrator, System & Product Technologies
789 E. Eisenhower, Parkway, P.O. Box 1346
Ann Arbor MI 48106-1346
+1.734.997.4059  or +1.800.521.0600 x 4059

ProQuest...Start here.

-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On 
Behalf Of K Gopalakrishnan
Sent: Friday, November 07, 2008 12:01 AM
To: mfontana@xxxxxxxxxxx
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: Concurrent Clusterware


Though it is technically possible, it is unsupported and not
warrented. Do you have any specific requirments for running this
config.. perhaps we can suggest some workarounds (!)

Best Regards,
K Gopalakrishnan
Co-Author: Oracle Wait Interface, Oracle Press 2004

Author: Oracle Database 10g RAC Handbook, Oracle Press 2006

On Thu, Nov 6, 2008 at 10:38 AM, Michael Fontana <mfontana@xxxxxxxxxxx> wrote:
> Is it possible to run both 10g and 11g clusterware on the same node?
> The documentation only provides upgrade instructions, and seems to imply
> that an 11g install will fail if it detects existing an existing crs
> process running.
> Anyone doing this?
> --


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