This illustration shows a messaging environment at an Oracle database. The messaging environment has the following components:

• A queue named streams_queue.

• An application that enqueues messages of type app_info into the streams_queue queue.

• A message notification configured to dequeue messages automatically from the streams_queue queue using the dequeue_app_messages PL/SQL procedure and the strmadmin messaging client/subscriber.

• A messaging client/subscriber named strmadmin that can dequeue messages from the streams_queue queue.

• An application that processes the dequeued messages.