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Oracle® Database Reference
10g Release 2 (10.2)

Part Number B14237-04
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V$SYSTEM_EVENT

This view contains information on total waits for an event. 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; doing this will have a small negative effect on system performance.

Column Datatype Description
EVENT VARCHAR2(64) Name of the wait event
TOTAL_WAITS NUMBER Total number of waits for the event
TOTAL_TIMEOUTS NUMBER Total number of timeouts for the event
TIME_WAITED NUMBER Total amount of time waited for the event (in hundredths of a second)
AVERAGE_WAIT NUMBER Average amount of time waited for the event (in hundredths of a second)
TIME_WAITED_MICRO NUMBER Total amount of time waited for the event (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