Re: Multiple databases in a RAC

  • From: John Clarke <john.clarke@xxxxxxxxxxxx>
  • To: "daniel.hubler@xxxxxxxxxx" <daniel.hubler@xxxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
  • Date: Thu, 20 Oct 2011 08:37:16 -0400

Multiple databases in a cluster is certainly supported, and something lots of 
companies do.  The decision of whether do proceed this way would depend on a 
number of factors (aggregate CPU requirements per database, interconnect 
chattiness per DB, maybe switch capabilities/capacities, how easy or hard it 
may be to provision storage for another set of clusterware, etc ...)
- John

From: "daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>" 
<daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>>
Reply-To: "daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>" 
<daniel.hubler@xxxxxxxxxx<mailto:daniel.hubler@xxxxxxxxxx>>
Date: Thu, 20 Oct 2011 08:09:29 -0400
To: "oracle-l@xxxxxxxxxxxxx<mailto:oracle-l@xxxxxxxxxxxxx>" 
<oracle-l@xxxxxxxxxxxxx<mailto:oracle-l@xxxxxxxxxxxxx>>
Subject: Multiple databases in a RAC

Oracle 11.2.0.2
AIX 6.1
Peoplesoft HCM + ELM

We have an existing 11.2.0.2 RAC + GRID cluster built to run Peoplesoft
HCM.
2 nodes....active/active.

We have been asked to install another Peoplesoft module (ELM).
My recommendation was to construct a 2nd cluster to support the 2nd module
and its database.
So........I would end up with 4 nodes (2 for the HCM cluster and 2 for the
ELM cluster)
and these clusters would be distinct.

I am being asked if it is possible to install the new ELM product on the
existing nodes.
That is..........a 2-node RAC cluster with 2 distinct databases and 4
instances.

This is not making much sense to me.....I am not even sure if this is
supported/feasible.


Looking for ideas on this.
Any input appreciated.
Thanks.

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