Re: Multiple DBs on One RAC - Adding New Nodes and Different Storage

From: Paresh Yadav <>
Date: Thu, 26 Dec 2013 14:31:52 -0500
Message-ID: <>

Merry Christmas, Happy Holidays and Happy New Year!

Never worked with or heard of the scenario you have described. AFAIK (from what I understand about RAC) this is not possible, at least not in Oracle database version 11g. All instances for the given database needs to have access to all tablespaces/datafiles etc. May be it is possible to do so in 12c with pluggable database architecture.


On Thu, Dec 26, 2013 at 2:22 PM, David Barbour <>wrote:

> Merry Christmas (to those of you who celebrate), Happy Holidays (to those
> who may not but have something going on - including New Year's), and Good
> Afternoon:
> We are currently running a 3-node RAC on RHEL 6.3(version
> 2.6.32-279.22.1.el6.x86_64), Oracle on ASM. Storage is
> fibre-connected EMC VMAX. Cluster cache communication is handled via
> Infiband. We are adding a new application and two nodes. The question
> arises with the storage. We're putting the new application on a Dell
> Compellent SAN. Also fibre connected. The plan is to make the 2 new nodes
> the primary nodes for this application, and make node 3 of the current
> cluster the fail-over.
> Can anyone who has used multiple different SANs before provide any
> hints/tips/tricks/pitfalls?
> Will we have to serve the current EMC Storage to the new nodes? I don't
> see why as we're not expanding the number of instances of the currently
> running application. But we will have to zone the new storage to connect
> to the third node of the current cluster. Any thoughts on how to install
> this new application? I don't really want instances of it on Nodes 1 & 2
> at all. If I make Node 3 the master node and install from there, I should
> be able to pick Nodes 4 & 5 on which to create the other new instances.
> Any thoughts?

Received on Thu Dec 26 2013 - 20:31:52 CET

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