Customer has the TaskPersistence in Oracle database, the Cleanup Submitted Tasks is running without problem but no disk space is being released after that.
CA Identity Manager 12.5.x or 12.6.x
Oracle DB as their TP repository.
In Oracle, deleting rows from a table won't automatically release any disk space.
To free up disk space run the Shrink command below, as suggestion you can perform a backup before running it.
ALTER TABLE OBJECT12_5 MODIFY LOB (OBJECT) (SHRINK SPACE);
ALTER TABLE OBJECT12_5 shrink space;
In case you have any problem with Cleanup Submitted Tasks while removing old data, see the Technical document below: