From: John Hurley <>
Date: Fri, 4 Sep 2009 11:24:27 -0700 (PDT)
Message-ID: <>

On Sep 4, 2:09 pm, Sue <> wrote:


> Does anyone know what CPU_COUNT means on a mulit-core machine?  Say
> you have a four core cpu.  Does setting CPU_COUNT to 1 use all 4 cores
> on 1 CPU or 1 core on a CPU?

Each core looks like to oracle a cpu ... this is not a throttling or hard/soft partitioning mechanism.

Never heard of anyone trying to set it directly ... oracle picks it up from the operating system.

If you have a system that does some kind of hard partition of cpu resources then oracle only see's what is available in that partition ( so sets CPU_COUNT correctly ).

There's a bunch of info in metalink on this ... Received on Fri Sep 04 2009 - 13:24:27 CDT

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