Re: Convert 2-node RAC to single instance
- From: Greg Rahn <greg@xxxxxxxxxxxxxxxxxx>
- To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Sat, 7 Feb 2009 22:25:58 -0800
I don't believe there is any difference in the binaries, but there is
RAC "overhead" if you run 1 instance with cluster_database=true
compared to false.
On Sat, Feb 7, 2009 at 7:41 PM, Bobak, Mark <Mark.Bobak@xxxxxxxxxxxx> wrote:
> I don't have any definitive data, but, if I recall correctly, one of the
> Oakies, maybe Bjorn Engsig(?), did a test, and found that running RAC
> binaries on a single instance database caused a noticeable performance
> penalty over the single instance binaries.
> If I recall correctly, he was quoting around 12-15% performance hit? Sorry,
> I don't remember details, and this was at least 2 years ago.....
--
Regards,
Greg Rahn
http://structureddata.org
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