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RE: Moving to 9i.....

From: Bobak, Mark <Mark.Bobak_at_il.proquest.com>
Date: Mon, 26 Jul 2004 17:53:29 -0400
Message-ID: <4C9B6FDA0B06FE4DAF5918BBF0AD82CF09660C44@bosmail00.bos.il.pqe>


Nope, checked that:

SQL> show parameter statistics

NAME                                 TYPE        VALUE
------------------------------------ ----------- =
------------------------------
statistics_level                     string      TYPICAL
timed_os_statistics                  integer     0
timed_statistics                     boolean     TRUE

Mark J. Bobak
Oracle DBA
ProQuest Company
Ann Arbor, MI
"Post Hoc Ergo Propter Hoc"

-----Original Message-----
From: oracle-l-bounce_at_freelists.org =
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Tanel P=F5der Sent: Monday, July 26, 2004 5:46 PM
To: oracle-l_at_freelists.org
Subject: Re: Moving to 9i.....

> For some reason, Oracle is doing LOTS more system calls. I tried
> trussing a couple of the hot server processses, I see lots and lots of
> poll(), pread() and times() sys calls. Inside the db, this translates
> to lots and lots of latch free on cache buffers chains and library
> cache. But, I suspect that it's secondary due to the CPU staravtion
> caused by the heavy syscall activity.

Do you have timed_os_statistics enabled? (if statistics_level =3D all = then
timed_os_statistics defaults to true...)

Tanel.



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Received on Mon Jul 26 2004 - 16:50:56 CDT

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