Re: statspack tuning in 9i: cpu time wait event?

Well even Oracle learns it after a couple of years. Have a look at my YAPP method and it will become (hopefully clear). Basically the Oracle kernel is using CPU or it is waiting on something. That is now shown in the Top 5 events. So in your case, have a look at your SQL.

Anjo.

(I can add more and more here, but I am a lazy typist ;-) )

On Tuesday 27 August 2002 14:48, you wrote:
> hi, dba friends:
> I am analyzing my new added rac database running rac 9.2 on linux
> cluster.I did a statspack report and surprised to find the following data:
>
> Top 5 Timed Events
> ~~~~~~~~~~~~~~~~~~ %
> Total Event Waits Time (s)
> Ela Time -------------------------------------------- ------------
> ----------- -------- CPU time
> 50,805 98.19 SQL*Net message from dblink
> 736 310 .60 latch free
> 7,676 259 .50 global cache s to x
> 19,320 118 .23 log file sync
> 8,850 46 .09 The top wait event is cpu time, but in
> fact, even during the most busy time, there is still cpu idle.So, what does
> the cpu time mean? Can someone help me understand it?
> Thanks.
>
> Regards
> zhu chao
> Eachnet DBA
> 86-21-32174588-667
> chao_ping_at_vip.163.com

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Author: Anjo Kolk
  INET: anjo_at_oraperf.com

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