RE: best way to invoke parallel in DW loads?
Date: Wed, 16 Sep 2009 16:54:00 +0300
In 11Gr2 this parameter can be used to CPU caging.
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Martin Berger Sent: Wednesday, September 16, 2009 4:47 PM To: Dave.Herring_at_acxiom.com
Cc: nkodner_at_gmail.com; oracle-l_at_freelists.org Subject: Re: best way to invoke parallel in DW loads?
just a small correction:
(at least in 22.214.171.124, have not tested 10gR2) these parameters are calculated from CPU_COUNT:
> CPU_COUNT -> please don't change this. Let Oracle figure it out. In 10g it's an underscore parameter and it doesn't make much sense to mess with it. The only impact that a manual change will have (I believe) is the default parallel degree, calculated by CPU_COUNT * PARALLEL_THREADS_PER_CPU.
Neil, if you want to tweek there, be careful and make good records about all related changes for tracability.