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| Poison message |
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| WBI_user |
 Posted: Mon Oct 06, 2003 2:51 pm Post subject: Poison message |
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Partisan
Joined: 07 Aug 2001
Posts: 386
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According to the MQ using Java manual. If ConnectionConsumer is used, the message that exceed the backout threshold will automatically be re-queued to the back out queuespecified.
My understanding is ConnectionConsumer is an App Server function (ASF). If my JMS program is not using ASf and it uses the onMessage method to pass message to the application. How can poison message be handled ? |
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| bower5932 |
| Posted: Tue Oct 07, 2003 11:15 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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I haven't tried it myself, but I would guess that you would throw an exception in your onMessage to get the message put back on the queue. It would then get redelivered to you. You'd need to keep an eye on the redelivery count and then eventually issue a send to move the message to another queue.
The gotchas will be that because you are using JMS, you don't have access to either the backout count or backout queue name so that you 'll know when to move the poison message..... |
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| sc |
| Posted: Wed Oct 08, 2003 8:03 pm Post subject: |
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Novice
Joined: 06 Sep 2003
Posts: 16
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| Actually you could use Message.getLongProperty("JMSXDeliveryCount") to find the backout count for specified message. Use another property name to find the value of backout queue name. |
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| bower5932 |
| Posted: Thu Oct 09, 2003 9:06 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| Oops...I meant JMS doesn't have access to the queue's backout threshold (not backout count). Sorry about that. |
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