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Re: 10g to RAC - what to do to avoid data duplication ?

From: Cristian Cudizio <>
Date: 30 Apr 2007 00:03:47 -0700
Message-ID: <>

On Apr 30, 2:03 am, DA Morgan <> wrote:
> Mladen Gogala wrote:
> > On Sat, 28 Apr 2007 14:02:27 -0700, DA Morgan wrote:
> >> ASM is a license requiremen for the implementation of RAC with Standard
> >> Edition.
> >> Telling people they probably don't need it might lead some to violate
> >> their license.
> > That is true, but the people running RAC with standard edition definitely
> > do not need RAC.
> I completely disagree. Why this attitude from both you, and to some
> extent Oracle, that people using SE don't need high availability? Is
> this some kind of anti-SE prejudice? You don't need MAA unless you
> have deep pockets?
> Just because someone doesn't need the full feature set of EE does
> not mean they don't need to eliminate the server as a single point
> of failure (or a DR site).
> I know a number of organizations that use SE RAC clusters to support
> their Grid Control OMR. Can you think of a single reason why they
> would want to go to EE? A single reason why they wouldn't want to
> invest a bit of effort in making sure the Grid is always up?
> I sure can't.
> --
> Daniel A. Morgan
> University of Washington
> (replace x with u to respond)
> Puget Sound Oracle Users

I agree with Daniel, i'm working for a ISV, we can ask our clients to buy EE licenses, we sometimes offer
RAC with standard edition, only two nodes, we have never experimented really high avalability, when we
hava had problems was with database itself and Oracle bugs, not with a single machine failure. But
i think that same would have appened if we was using Enterprise Editition two nodes RAC, but
having spent the triple of money of Oracle licenses. We have a customer with 400 users, we have
no tests of single instance, but another customer with 9iR2 RAC on AIX (so EE) with hardware
three years older have had performance problems, also with EE. So i think that RAC with Standard Edition may be an interesting solution.

 Cristian Cudizio Received on Mon Apr 30 2007 - 02:03:47 CDT

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