Re: Convert 2-node RAC to single instance

From: Greg Rahn <>
Date: Sat, 7 Feb 2009 22:25:58 -0800
Message-ID: <>

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 <> 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.....

Greg Rahn
Received on Sun Feb 08 2009 - 00:25:58 CST

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