Dynamic Performance (V$) Views, 139 of 179

V$SESSION_EVENT

This view lists information on waits for an event by a session. Note that the TIME_WAITED and AVERAGE_WAIT columns will contain a value of zero on those platforms that do not support a fast timing mechanism. If you are running on one of these platforms and you want this column to reflect true wait times, you must set TIMED_STATISTICS to TRUE in the parameter file. Please remember that doing this will have a small negative effect on system performance.

See Also:
"TIMED_STATISTICS".

Column Datatype Description

SID

NUMBER

The ID of the session

EVENT

VARCHAR2(64)

The name of the wait event.
See Also: Appendix A, "Oracle Wait Events"

TOTAL_WAITS

NUMBER

The total number of waits for this event by this session

TOTAL_TIMEOUTS

NUMBER

The total number of timeouts for this event by this session

TIME_WAITED

NUMBER

The total amount of time waited for this event by this session, in hundredths of a second

AVERAGE_WAIT

NUMBER

The average amount of time waited for this event by this session, in hundredths of a second

MAX_WAIT

NUMBER

The maximum time (in hundredths of a second) waited for this event by this session

Column	Datatype	Description
`SID`	`NUMBER`	The ID of the session
`EVENT`	`VARCHAR2(64)`	The name of the wait event. See Also: Appendix A, "Oracle Wait Events"
`TOTAL_WAITS`	`NUMBER`	The total number of waits for this event by this session
`TOTAL_TIMEOUTS`	`NUMBER`	The total number of timeouts for this event by this session
`TIME_WAITED`	`NUMBER`	The total amount of time waited for this event by this session, in hundredths of a second
`AVERAGE_WAIT`	`NUMBER`	The average amount of time waited for this event by this session, in hundredths of a second
`MAX_WAIT`	`NUMBER`	The maximum time (in hundredths of a second) waited for this event by this session