Review $AUTOUSER/out/DBMaint.out to confirm the database maintenance is occurring. DBMaint will purge older records from the database, opening up space for new entries. To adjust DBMaint settings modify the $AUTOUSERV/bin/DBMaint file's archive_events settings.
Examine $AUTOUSER/out/event_demon.$ATUOSERV log files to see if more jobs/events have been processed per day than prior days. Run the autoaggar command to review the number of events, alarm, runs etc.. per day or month to see if it has been increasing steadily or spiked. Confirm that the aedbadmin and autosys database user are not also the owner of user created objects. Query the ujo tables to identify the large ones to see if there is a problem with old records not being archived. Common tables to check: ujo_alarm ujo_audit_info ujo_audit_msg ujo_chase ujo_event ujo_job ujo_job_runs ujo_proc_event