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; derived statistic name from `V$EVENT_NAME` See Also: "Oracle Wait Events"
`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)
`CPU`	`NUMBER`	Total amount of CPU time consumed while implementing the wait event itself (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`	Total amount of time waited for the event, from foreground sessions (in hundredths of a second)
`AVERAGE_WAIT_FG`	`NUMBER`	Average amount of time waited for the event, from foreground sessions (in hundredths of a second)
`TIME_WAITED_MICRO_FG`	`NUMBER`	Total amount of time waited for the event, from foreground sessions (in microseconds)
`CPU_FG`	`NUMBER`	Total amount of CPU time consumed while implementing the wait event itself, from foreground sessions (in microseconds)
`EVENT_ID`	`NUMBER`	Identifier of the wait event
`WAIT_CLASS_ID`	`NUMBER`	Identifier of the wait class of the wait event
`WAIT_CLASS#`	`NUMBER`	Number of the wait class of the wait event
`WAIT_CLASS`	`VARCHAR2(64)`	Name of the wait 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 `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 the container ID for that PDB.