V$SERVICE_WAIT_CLASS displays aggregated wait counts and wait times for each wait statistic. An aggregation of these wait classes is used when thresholds are imported.
| Column | Datatype | Description | 
|---|---|---|
| SERVICE_NAME | VARCHAR2(64) | Service name from V$SERVICES | 
| SERVICE_NAME_HASH | NUMBER | Service name hash from V$SERVICES | 
| 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 for this client | 
| TIME_WAITED | NUMBER | Amount of time (in hundredths of a second) spent in the class by this session |