V$MUTEX_SLEEP

V$MUTEX_SLEEP shows the wait time, and the number of sleeps for each combination of mutex type and location.

Column	Datatype	Description
MUTEX_TYPE	VARCHAR2(32)	Type of action/object the mutex protects
LOCATION	VARCHAR2(40)	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_ID	NUMBER	The ID of the container to which the data pertains. 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