Advanced Queuing - Oracle

Propagation Features
CONNECT ES/ES;
SET SERVEROUTPUT ON;
/* Dequeue all remaining booked orders (normal order) for East_Shipping: */
EXECUTE BOLADM.shipping_bookedorder_deq(’East_Shipping’, DBMS_AQ.REMOVE);
CONNECT OS/OS;
SET SERVEROUTPUT ON;
/* Dequeue all international North American orders for Overseas_Shipping: */
EXECUTE BOLADM.get_northamerican_orders(’Overseas_Shipping’);
/* Dequeue rest of the booked orders for Overseas_Shipping: */
EXECUTE BOLADM.shipping_bookedorder_deq(’Overseas_Shipping’, DBMS_AQ.REMOVE);
/* Disable propagation schedule for booked orders
EXECUTE dbms_aqadm.disable_propagation_schedule( \
queue_name => ’OE_bookedorders_que’);
/* Wait for some time for call to be effected: */
EXECUTE dbms_lock.sleep(30);
/* Check if the schedule has been disabled: */
SELECT schedule_disabled FROM user_queue_schedules;
/* Alter propagation schedule for booked orders to execute every
15 mins (900 seconds) for a window duration of 300 seconds: */
EXECUTE dbms_aqadm.alter_propagation_schedule( \
queue_name => ’OE_bookedorders_que’, \
duration => 300, \
next_time => ’SYSDATE + 900/86400’,\
latency => 25);
/* Wait for some time for call to be effected: */
EXECUTE dbms_lock.sleep(30);
/* Check if the schedule parameters have changed: */
SELECT next_time, latency, propagation_window FROM user_queue_schedules;
/* Enable propagation schedule for booked orders:
EXECUTE dbms_aqadm.enable_propagation_schedule( \
queue_name => ’OE_bookedorders_que’);
/* Wait for some time for call to be effected: */
EXECUTE dbms_lock.sleep(30);
8-110 Oracle9i Application Developer’s Guide - Advanced Queuing