RE: Weird database hanging

Have a look at 

http://momendba.blogspot.com/2007/06/cursor-pin-s-wait-on-x-wait-event-in.html
and
http://jonathanlewis.wordpress.com/2007/08/20/intelligent-stats/

for the wait event.

"Zanen van, J (Jacob)" <Jacob.van.Zanen@xxxxxxxxxxxx> wrote: I believe there is 
a patch for the cursor: pin S wait on X bug (5907779)


Brgds


jack

-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Greg Rahn
Sent: Thursday, 25 October 2007 11:17 AM
To: ag@xxxxxxxxxxxx
Cc: don@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: Re: Weird database hanging

I do believe that there have been reports of hangs on "cursor: pin S
wait on X" with 10.2.0.2.  The best way to proceed would be to get a
system state dump and upload it to a SR.  It should be able to be
identified by the trace.  I believe they may be a patch/ARU for it.

On 10/24/07, Alex Gorbachev  wrote:
> Your data from ASH doesn't have anything between 10:44 and 10:53 - it 
> was probably stuck as well.
>
> "os thread startup" is rather strange - problems starting new
processes?
>
> And this is interesting - "cursor: pin S wait on X". Alex Fatkulin is 
> hinting next to me that it *might* be new "cool" mutex that is enabled

> by default in 10.2.0.2. Disable - _kks_use_mutex_pin=false.
>
> There was a discussion on Oracle-L about it.

--
Regards,

Greg Rahn
http://structureddata.org
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http://www.freelists.org/webpage/oracle-l


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