Advanced Queuing - Oracle

Propagation
Propagation
}
System.out.println("Exception-2: " + ex);
ex.printStackTrace();
}
Caution: You may need to create queues or queue tables, or start
or enable queues, for certain examples to work:
Enqueue of Messages for remote subscribers/recipients to a Multiconsumer Queue
and Propagation Scheduling Using PL/SQL
/* Create subscriber list: */
DECLARE
subscriber aq$_agent;
/* Add subscribers RED and GREEN with different addresses to the suscriber
list: */
BEGIN
BEGIN
/* Add subscriber RED that will dequeue messages from another_msg_queue
queue in the same datatbase */
subscriber := aq$_agent(’RED’, ’another_msg_queue’, NULL);
DBMS_AQADM.ADD_SUBSCRIBER(queue_name => ’msg_queue_multiple’,
subscriber => subscriber);
/* Schedule propagation from msg_queue_multiple to other queues in the
same
database: */
DBMS_AQADM.SCHEDULE_PROPAGATION(queue_name => ’msg_queue_multiple’);
/* Add subscriber GREEN that will dequeue messages from the msg_queue
queue
in another database reached by the database link another_db.world */
subscriber := aq$_agent(’GREEN’, ’msg_queue@another_db.world’, NULL);
DBMS_AQADM.ADD_SUBSCRIBER(queue_name => ’msg_queue_multiple’,
subscriber => subscriber);
/* Schedule propagation from msg_queue_multiple to other queues in the
database "another_database": */
A-62 Oracle9i Application Developer’s Guide - Advanced Queuing