V$WAITSTAT displays block contention statistics. This table is only updated when timed statistics are enabled.
| Column | Datatype | Description | 
|---|---|---|
| CLASS | VARCHAR2(18) | Class of the block | 
| COUNT | NUMBER | Number of waits by this OPERATIONfor thisCLASSof block | 
| TIME | NUMBER | Sum of all wait times for all the waits by this OPERATIONfor thisCLASSof block |