In the Enforce UI incidents are marked for deletion. On a regular basis another process purges the marked incidents from the database.
Please note - the steps in this article apply to DLP versions prior to 12.0. In DLP 12.5 and higher, the incident deletion process has changed, with many options available in the Enforce Manager console. Please see the relevant release of the DLP Administrator Guide for more details.
Incidents deleted within the UI are purged from the Oracle database on a regular interval.
The interval is controlled by the manager.properties