That is a wait for parallel query slave to finish processing.
> -----Original Message-----
> From: Tom Schruefer [mailto:tschruefer_at_mail.howard.k12.md.us]
> Sent: Tuesday, May 21, 2002 4:32 PM
> To: Multiple recipients of list ORACLE-L
> Subject: ID This Wait stat
>
>
>
> You know I could have all the documentation for Oracle
> printed on my brain,
> buy all the books ever written about the subject, but the primary wait
> problem that comes up will never be directly addressed.
>
> So, what exactly does 'Slave Wait' mean and what can I do about it?
>
>
> I am using DBWR Slaves, since it did not seem as though
> starting additional
> DBWR's was appropriate on a Win2000 system.
>
> Here are the Top 5 wait events as per Statpack and my shinny
> new 'Oracle
> Performance Tuning 101' book:
>
> Top 5 Wait Events
> ~~~~~~~~~~~~~~~~~
> Wait %
> Total
> Event Waits
> Time (cs) Wt
> Time
> -------------------------------------------- ------------
> ------------ -----
> --
> slave wait 66,593 6,793,939
> 88.85
> PX Deq: Execution Msg 28,960 407,167
> 5.33
> PX Deq: Table Q Normal 19,864 302,480
> 3.96
> PX Deq Credit: send blkd 3,685 123,671
> 1.62
> PX Deq: Signal ACK 3,214 5,294
> .07
>
>
> I have a pretty good idea that 2-5 are for parallel query
> option, although I
> still have to figure out just what they mean.
>
>
> Any help would be greatly appreciated.
>
> _____________________________________________________________
> Tom Schruefer - tschruefer_at_mail.howard.k12.md.us
> 410-313-6825
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Tom Schruefer
> INET: tschruefer_at_mail.howard.k12.md.us
>
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Received on Tue May 21 2002 - 16:15:47 CDT
