Re: RAC or Large SMP...?

From: Bob Jones <email_at_me.not>
Date: Tue, 7 Oct 2008 19:36:06 -0500
Message-ID: <TfTGk.41$>

<> wrote in message
>I support an OLTP application which handles 2 million transactions per
> day and is running on 10gR2 EE on RHEL 4 x86_64.
> I am investigating scaling options for the application and I'm trying
> to decide between 2 large SMP servers or a multi-node RAC
> configuration.
> As far as I can tell, the highest number of cores available in an
> x64_64 server is 24. This would only allow us to handle 6 times the
> current workload, and realistically we need to be able to support up
> to 20 times the load.
> Has anyone had any experience of comparing the 2 approaches with
> respect to cost, manageability, performance, etc. Can you offer any
> advise and/or pointers to resources to help out with this
> investigation.
> Specifically I'm interested in:
> What is the most powerful x86_64 machine available..?
> Can Oracle scale well on NUMA based architectures (as some of the high
> end x64_64 based servers seem to be)..?
> Is the cost difference between '2 x large SMP' and 'multi-node RAC'
> large enough to justify the extra complexity of administering a
> cluster environment...?
> Any assistance on this would be greatly appreciated.
> Thanks

If you have your mind set on x86, I would suggest looking into IBM xSeries. They can scale way beyond 24 cores. Received on Tue Oct 07 2008 - 19:36:06 CDT

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