The standardization of the distributed and unit-of-order ISSUE

Hello

I will in the following document and I have a few questions on this basis
http://docs.Oracle.com/CD/E17904_01/Web.1111/e13727/uoo.htm

1.
Based on the above, if a unit-of-order jms message is sent to a uniform distributed topic, Weblogic sends the message that one of the members of destination topic. Is it also correct to assume that messages will not be transmitted to other members of topic destination even if the redirection policy is set to "REPLICATED"?


2.
In addition, the document above (http://docs.oracle.com/cd/E17904_01/web.1111/e13727/uoo.htm#i1041061) mentions a limitation when using uniform distributed QUEUE and unit-of-order with hash routing function. That is to say
+ "If a member of queues distributed has a unit-of-control partner and is inaccessible, the producer sends the message will throw a JMSOrderException and messages are not routed to other distributed queue members. +.

However, the document does not mention what would be a behavior under the same scenario when using uniform distributed TOPIC (the use of hash-based routing)? will it be the same behavior with uniform SUBJECT distributed as well? Can you please clarify this


3 Please refer to the section of the document http://docs.oracle.com/cd/E17904_01/web.1111/e13727/uoo.htm#i1044686, where it is said that + 'unit-of-Order messages are processed one at a time' +. This means that any operation batch parameter specified on the MDB (listening on the subject) will be ignored and that a message will be processed at a time?


Kind regards
Arif

Published by: user602479 on January 11, 2012 12:15 AM

I somehow implies that the behavior of publish/subscribe violates the contract PUA? In an RTD or a PDT, messages for the same AUP can of course be copied on multiple subscriptions. The ranking of the AUP of transformation within a given subscription is maintained.

That said, there are only two cases where I remember off-the-top of my head that PUA command can easily be violated:

-As you mentioned, no transactional section BMD in compatibility mode that max-beans-in free-pool greater than 1 more run in a thread pool with more than 1 thread available in the MDB. IIRC, compatibility mode is not supported with Stdp, this restriction does not apply to the Stdp. It's good to know you already noticed this in the docs.

-Distributed queues that allow "transfer queue". I know it's documented too, but I don't remember where.

I do not remember the existence of special restrictions on the use of PUA in combination with the PDT. Hash-based routing applies on the way of the shipment and has the same behavior on a like on a TDR or a UDQ TMP. Ditto for the track of basis of Routing Service.

Kind regards

Tom

Published by: falls on January 11, 2012 17:29

Tags: Fusion Middleware

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