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