Oracle advanced queuing

Hi,
I am new to Oracle Advanced queuing. I have a question.
After enqueue operation, the message can be retrieved by dequeue operation.
But, why do we need SCHEDULE_PROPAGATION ?
Do we use that when we are sending it to a totally differnt queue in someother remote database ?
Thanks,
Message was edited by:
user448390

Do we use that when we are sending it to a totally
differnt queue in someother remote database ?yes, partly true...SCHEDULE_PROPAGATION is used when we schedule propagation of messages to a destination identified by a Database Link.
DBMS_AQADM.SCHEDULE_PROPAGATION (
   queue_name          IN    VARCHAR2,
   destination         IN    VARCHAR2 DEFAULT NULL,
   start_time          IN    DATE     DEFAULT SYSDATE,
   duration            IN    NUMBER   DEFAULT NULL,
   next_time           IN    VARCHAR2 DEFAULT NULL,
   latency             IN    NUMBER   DEFAULT 60,
   destination_queue IN VARCHAR2 DEFAULT NULL);
destination_queue -- Name of the target queue to which messages are to be propagated in the form of a dblink.
Messages may also be propagated to other queues in the same database by specifying a NULL destination. If a message has multiple recipients at the same destination in either the same or different queues, the message is propagated to all of them at the same time.
Hope this will help..
Thanks

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Propagation between queues in Oracle Advanced Queuing

We would like to connect two queues that reside in different database schemas/instances.
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Enqueuing is done with a recipient list in order to set multiple local subscribers for the messages that are put onto the queue.
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you get the patch. A quicker and easier way to get Oracle8i up
cheaply for evaluation is to download the NT version. I'm
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xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
>
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</plt:partnerLinkType>
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xmlns="http://www.w3.org/2001/XMLSchema"
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<element name="PayloadHeader" type="xs:string" />
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Regards,
Ronald

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Oracle Streams Advanced Queuing and Real Application Clusters: Scalability and Performance Guidelines (Technical Whitepaper)
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