Re: "CI" locks

From: Christian Trassens <ctrassens_at_yahoo.com>
Date: Thu, 04 Oct 2001 02:43:50 -0700
Message-ID: <F001.003A192F.20011004015023@fatcity.com>

It's a kind of lock that appears on Parallel Server. However, it happens without it when buffers are flushed for reuse. F.e., during a truncate table.

Also with applications that uses dbms_pipe this contention could be usual, because of the processes queue up for blocks on buffers.

It is recommeded to increase the shared pool. However, if it is sporadic and "nobody" is hurt, I won't change it. Are you using Applications ?.

Regards.

• "Boivin, Patrice J" <BoivinP_at_mar.dfo-mpo.gc.ca> wrote:
  > Would anyone know off hand what a CI type lock is?
  >
  > This is from the output of the following query:
  > select ksqsttyp eq_type,
  > ksqstget gets,
  > ksqstwat waits
  > from x$ksqst
  > where ksqstget !=0
  > /
  >
  > On Oracle 7.3.4.4.0
  >
  > Regards,
  > Patrice Boivin
  > Systems Analyst (Oracle Certified DBA)
  >
  > Systems Admin & Operations | Admin. et Exploit. des
  > systèmes
  > Technology Services | Services technologiques
  > Informatics Branch | Direction de
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  > Maritimes Region, DFO | Région des Maritimes,
  > MPO
  >
  > --
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  > Author: Boivin, Patrice J
  > INET: BoivinP_at_mar.dfo-mpo.gc.ca
  >
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Eng. Christian Trassens
Senior DBA
Systems Engineer
ctrassens_at_yahoo.com
ctrassens_at_hotmail.com
Phone : 541149816062

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Received on Thu Oct 04 2001 - 04:43:50 CDT