Data generated by table space event monitors
Table space event monitors produce aggregate metrics for table spaces in the database. You can choose to have the output from a database event monitor to regular tables, files or pipes.
Regardless of the output format you choose, all table space event data comes from the event_tablespace logical data group. In addition, if you choose to have statement event data written to tables, data from an additional group (CONTROL) is used to generate metadata about the event monitor itself.