Re: System Stats - MAXTHR and SLAVETHR
Date: Fri, 2 Sep 2016 10:46:17 -0300
Message-ID: <CAPWdmV_oVrNNXu+t-mOAohHXTqWte=kGM0X8oNa+KCGHvn2iQA_at_mail.gmail.com>
*--*
*Att*
*Luis Santos*
2016-09-02 4:29 GMT-03:00 Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>:
>
> A simple explanation would be that you gathered system stats over a period
> (start/stop option) in which no parallel queries occurred. Those figures
> allow the optimizer to calculate the maximum effective degree of
> parallelism by comparing the maximum throughput the QC can take compared to
> the average throughput a PX slave can produce.
>
>
>
> Regards
> Jonathan Lewis
> http://jonathanlewis.wordpress.com
> _at_jloracle
> ------------------------------
> *From:* oracle-l-bounce_at_freelists.org [oracle-l-bounce_at_freelists.org] on
> behalf of Deepak Sharma [dmarc-noreply_at_freelists.org]
> *Sent:* 02 September 2016 02:46
> *To:* Oracle-L Freelists
> *Subject:* System Stats - MAXTHR and SLAVETHR
>
> A 10053 trace showed these as '-1 bytes/sec'.
>
> What does that mean?
>
>
-- http://www.freelists.org/webpage/oracle-lReceived on Fri Sep 02 2016 - 15:46:17 CEST