Re: waits vs. logons

yep, look at CPU used by this session in V$sesstat.

CPU + WAIT should get close to the logon_secs. There are a number of reasons why it can't and shouldn't but for simplicity go with it.

Anjo.

On Wednesday 04 September 2002 22:59, you wrote:
> I run the following query to compare the total waits for a session verses
> the seconds logged on:
>
> select a.sid, a.ontime longon_secs, round(b.waittime) wait_secs
> from
> (select sid, (sysdate - logon_time)*24*60*60 ontime
> from v$session ) a,
> (select sid, sum(time_waited)/100 waittime
> from v$session_event
> group by sid) b
> where a.sid = b.sid;
>
> I get the following results:
>
> SID LONGON_SECS WAIT_SECS
> ---------- ----------- ----------
> 1 595995 595989
> 2 595994 471204
> 3 595994 595585
> 4 595994 594580
> 5 595994 595492
> 6 595994 593639
> 9 595993 577157
> 14 4943 1303
> 24 595844 588441
> 26 1733 1728
> 27 5308 2478
> 29 517269 0
> 32 53 0
> 35 415158 13
> 50 140478 140371
> 51 719 507
> 56 14507 8706
> 59 2269 221
>
> I am very much a novice when it comes to wait statistics. When a session,
> for example #51, has been logged on for 719 seconds but has experienced
> only 507 wait seconds, what did it do the rest of the time? I am assuming
> some kind of work? Any way to determine what?
>
> Tom

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-- 
Author: Anjo Kolk
  INET: anjo_at_oraperf.com

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