Re: Convert 2-node RAC to single instance
From: Greg Rahn <greg_at_structureddata.org>
Date: Sat, 7 Feb 2009 22:25:58 -0800
Message-ID: <a9c093440902072225w17d2ce5bu59ef9d6554255134_at_mail.gmail.com>
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.
Date: Sat, 7 Feb 2009 22:25:58 -0800
Message-ID: <a9c093440902072225w17d2ce5bu59ef9d6554255134_at_mail.gmail.com>
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_at_proquest.com> 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 -- http://www.freelists.org/webpage/oracle-lReceived on Sun Feb 08 2009 - 00:25:58 CST