RE: ID This Wait stat

Now that's a truly useful site, someone could make that into one of those Pocket DBA books. ;->

Thanks Lots.......

> -----Original Message-----
> From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of
> Jared.Still_at_radisys.com
> Sent: Tuesday, May 21, 2002 7:20 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: ID This Wait stat
>
>
> You can ignore them.
>
> See: http://www.ixora.com.au/q+a/waits.htm
>
>
>
>
>
> "Tom Schruefer" <tschruefer_at_mail.howard.k12.md.us>
> Sent by: root_at_fatcity.com
> 05/21/2002 01:32 PM
> Please respond to ORACLE-L
>
>
> To: Multiple recipients of list ORACLE-L
> <ORACLE-L_at_fatcity.com>
> cc:
> 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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> INET: Jared.Still_at_radisys.com
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-- 
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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