Re: Plan change after moving to 10g 10.2.0.3

From: Greg Rahn <greg_at_structureddata.org>
Date: Thu, 18 Dec 2008 09:37:32 -0800
Message-ID: <a9c093440812180937u1d2dc985yb0a5b6b1bcd975d4@mail.gmail.com>


A good place to start...
http://www.oracle.com/technology/products/bi/db/10g/pdf/twp_bidw_optimizer_10gr2_0208.pdf

On Wed, Dec 17, 2008 at 11:44 PM, hrishy <hrishys_at_yahoo.co.uk> wrote:
> Hi
>
> I have a very simple query (which i should be able to post after i have acesses to it) where the plan has changed NL using a index to Hash join on a simple two table join after migrating to 10.2.0.3.
>
> My question is
> Has anybody encountered such a situation after migarting from 9i to 10g RAC ?
> Will oracle support guys help me if i give them the good and the bad plans and the 10053 traces ? (is this covered as part of metalink support contract)
>
> I am clueless on how come a simpel two table join with no partitioning a query could go bad.

-- 
Regards,
Greg Rahn
http://structureddata.org
--
http://www.freelists.org/webpage/oracle-l
Received on Thu Dec 18 2008 - 11:37:32 CST

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