V$CON_SYSTEM_EVENT

V$CON_SYSTEM_EVENT displays information on total waits for an event in a container. 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

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)

TOTAL_WAITS_FG

NUMBER

Total number of waits for the event, from foreground sessions

TOTAL_TIMEOUTS_FG

NUMBER

Total number of timeouts for the event, from foreground sessions

TIME_WAITED_FG

NUMBER

Amount of time waited for the event (in hundredths of a second), from foreground sessions

AVERAGE_WAIT_FG

NUMBER

Average amount of time waited for the event (in hundredths of a second), from foreground sessions

TIME_WAITED_MICRO_FG

NUMBER

Amount of time waited for the event (in microseconds), from foreground sessions

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

CON_ID

NUMBER

When queried from a non-CDB, the wait event data in that instance are returned, and the CON_ID value is set to 0.

When queried from the root of a CDB, the wait event data in every container is returned, and the CON_ID value indicates the container to which the wait event data belong.

When queried from a PDB, wait event data in that PDB are returned, and the CON_ID value is set to the container ID for that PDB.