Re: 9.2 - Parallel Query Not Working

  • From: "Greg Rahn" <greg@xxxxxxxxxxxxxxxxxx>
  • To: david@xxxxxxxxxxxxxxxxxx
  • Date: Thu, 28 Feb 2008 11:38:32 -0800

What does v$px_session show for DEGREE and REQ_DEGREE?
If you bounce the instance does it work?
What PQ parameters are set?

First I would determine if it is giving you the requested number of
slaves.   If it's not, then the fun starts :)

On 2/28/08, David Aldridge <david@xxxxxxxxxxxxxxxxxx> wrote:
> On a database on Solarix 64, which is created every day from a
> magical SAN-based mirror process thing (excuse the tech talk), we alter a
> particular table to a default degree of parallelsim of 12. A process which
> performs a full scan of that table picks up the degree of 12 and completes
> in a couple of hours.
> Later in the day we can no longer prompt the instance to give any
> parallelism.


Greg Rahn

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