V$SYSTEM_WAIT_CLASS displays the instance-wide time totals for each registered wait class.
| Column | Datatype | Description |
|---|---|---|
WAIT_CLASS_ID |
NUMBER |
Identifier of the wait class |
WAIT_CLASS# |
NUMBER |
Number of the wait class |
WAIT_CLASS |
VARCHAR2(64) |
Name of the wait class |
TOTAL_WAITS |
NUMBER |
Number of times waits of the class occurred |
TIME_WAITED |
NUMBER |
Amount of time spent in the wait by all sessions in the instance |
TOTAL_WAITS_FG |
NUMBER |
Number of times waits of the class occurred, in the foreground session |
TIME_WAITED_FG |
NUMBER |
Amount of time spent in the wait, in the foreground session |