ora.cvu

http://oraclehandson.wordpress.com/2010/11/01/whats-new-in-oracle-11-2-0-2/

New resource ora.cvu (Cluster Verification Utility) is added in 11.2.0.2

This resource invokes cluster verification utility (I guess it is executed after every 6 hours) and store it’s output in $GRID_HOME/log/nodename/cvu/cvulog/cvu20101101111536.log

Detail trace of this utility is also saved under  $GRID_HOME/log/nodename/cvu/cvutrc
-rw-r–r–   1 oragrid  oinstall 5720101 Nov  1 11:16 cvutrace.log.0
-rw-r–r–   1 oragrid  oinstall 26213985 Nov  1 05:15 cvutrace.log.3