I'm just guessing here, but it might be possible that the hanganalyze command itself posted PMON, which triggered the RAC aware hanganalyze code there, which waited on the latch. So this KJC latch wait could be a false alarm.. Tanel. > -----Original Message----- > From: oracle-l-bounce@xxxxxxxxxxxxx > [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Allen, Brandon > Sent: Thursday, January 11, 2007 04:09 > To: K Gopalakrishnan; oracle-l > Cc: Tanel Poder > Subject: RE: Rollback waiting on 'cache buffer chains' latch - SOLVED > > No, we are not running RAC. > > Thanks, > Brandon -- //www.freelists.org/webpage/oracle-l