DBA_HIST_MUTEX_SLEEP

DBA_HIST_MUTEX_SLEEP displays mutex sleep summary historical statistics information.

Column Datatype NULL Description
SNAP_ID NUMBER NOT NULL Unique snapshot ID
DBID NUMBER NOT NULL Databse identifier for the snapshot
INSTANCE_NUMBER NUMBER NOT NULL Instance number for the snapshot
MUTEX_TYPE VARCHAR2(32) NOT NULL Mutex type
LOCATION VARCHAR2(40) NOT NULL ???
SLEEPS NUMBER   ???
WAIT_TIME NUMBER   ???