DBA_HIST_WR_CONTROL

DBA_HIST_WR_CONTROL displays the control information for the Workload Repository.

Column	Datatype	NULL	Description
`DBID`	`NUMBER`	`NOT NULL`	Database ID
`SNAP_INTERVAL`	`INTERVAL DAY(5) TO SECOND(1)`	`NOT NULL`	Snapshot interval; how often to automatically take snapshots
`RETENTION`	`INTERVAL DAY(5) TO SECOND(1)`	`NOT NULL`	Retention setting for the snapshots; amount of time to keep the snapshots
`TOPNSQL`	`VARCHAR2(10)`		The number of Top SQL flushed for each SQL criteria (elapsed time, CPU time, parse calls, shareable memory, version count)