DBA_HIST_SESS_TIME_STATS displays information about CPU and I/O time for interesting Streams sessions.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| SNAP_ID | NUMBER | NOT NULL | Unique snapshot ID | 
| DBID | NUMBER | NOT NULL | Database ID for the snapshot | 
| INSTANCE_NUMBER | NUMBER | NOT NULL | Instance number for the snapshot | 
| SESSION_TYPE | VARCHAR2(64) | NOT NULL | Type of session | 
| MIN_LOGON_TIME | DATE | Minimum logon time | |
| SUM_CPU_TIME | NUMBER | Total CPU time | |
| SUM_SYS_IO_WAIT | NUMBER | Total system I/O wait time | |
| SUM_USER_IO_WAIT | NUMBER | Total user I/O wait time |