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	Database 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	The code location where the waiter slept for the mutex
SLEEPS	NUMBER		Number of sleeps for this MUTEX_TYPE and LOCATION
WAIT_TIME	NUMBER		Wait time in microseconds
CON_DBID	NUMBER		The database ID of the PDB for the sampled session
CON_ID	NUMBER		The ID of the container that CON_DBID identifies. Possible values include: 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs. 1: This value is used for rows containing data that pertain to only the root n: Where n is the applicable container ID for the rows containing data