V$SESSION_EVENT

V$SESSION_EVENT displays 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, then you must set TIMED_STATISTICS to true in the parameter file; doing this will have a small negative effect on system performance.

See Also:

"TIMED_STATISTICS"

Column	Datatype	Description
`SID`	`NUMBER`	ID of the session
`EVENT`	`VARCHAR2(64)`	Name of the wait event See Also: Appendix C, "Oracle Wait Events"
`TOTAL_WAITS`	`NUMBER`	Total number of waits for the event by the session
`TOTAL_TIMEOUTS`	`NUMBER`	Total number of timeouts for the event by the session
`TIME_WAITED`	`NUMBER`	Total amount of time waited for the event by the session (in hundredths of a second)
`AVERAGE_WAIT`	`NUMBER`	Average amount of time waited for the event by the session (in hundredths of a second)
`MAX_WAIT`	`NUMBER`	Maximum time waited for the event by the session (in hundredths of a second)
`TIME_WAITED_MICRO`	`NUMBER`	Total amount of time waited for the event by the session (in microseconds)
`EVENT_ID`	`NUMBER`	Identifier of the wait event
`WAIT_CLASS_ID`	`NUMBER`	Identifier of the class of the wait event
`WAIT_CLASS#`	`NUMBER`	Number of the class of the wait event
`WAIT_CLASS`	`VARCHAR2(64)`	Name of the class of the wait event