8.78 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