Re: asynch descriptor resize wait event

  • From: K Gopalakrishnan <kaygopal@xxxxxxxxx>
  • To: sims@xxxxxxx
  • Date: Wed, 19 May 2010 20:00:57 -0500

This undocumented wait event is recorded when there is an underlying
IO descriptors (kiocb in linux?)  needs to be adjusted. During the
time all the pending IOs are suspended momentarily and resumed after
the structure is expanded.  I am not sure why this happens in an
otherwise idle database.  Perhaps a bug?



On Wed, May 19, 2010 at 3:48 PM, April Sims <sims@xxxxxxx> wrote:
> Anyone know what is causing "asynch descriptor resize" wait events on
> 11gR2.(11.2.0.1)..on a test database which is mostly idle?
> Linux RH 4 - 64bit
>
> I can only find a limited amount of information on MOS and hardly anything
> in the Internet.
>
>  Hanging in SQLPLUS when querying dba_autotask_client which led me to search
> for wait events.
>
> thanks
>
>
>
>
>
>
>
> April Sims
> SELECT IOUG Contributing Editor
> http://aprilcsims.wordpress.com
> http://www.twitter.com/aprilcsims
> Oracle Database 11g – Underground Advice for Database Administrators
> http://www.amazon.com/Oracle-Database-Underground-Advice-Administrators/dp/1849680000/ref=sr_1_1?ie=UTF8&s=books&qid=1272289339&sr=8-1#noop
> OCP 8i, 9i, 10g DBA
> Southern Utah University
> sims@xxxxxxx
> 940-484-4276
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