Monitor AQ$ tables for OPP performance
6. Monitor AQ$ tables
The AQ$_FND_CP_GSM_OPP_AQTBL_H is a history table.Ensure you purge at regular interval.
select count(*) from AQ$_FND_CP_GSM_OPP_AQTBL_H;
If the table is grown, then one can purge using DBMS_AQADM.PURGE_QUEUE_TABLE. Refer to: (Doc ID 1156523.1)
Tuning Output Post Processor (OPP) to Improve Performance (Doc ID 1399454.1)