DLQ Questions

[fredrich]

Hi gurus,

I have few questions :

1).How send the_message_sent_to_a_MDB_but_always_rollback(a.k.a Poison Message) to another USER DEFINED QUEUE OR TOPIC rather than DLQ queue? I would like to see the way you configure JBoss.

2).DLQ Handler always react when a message is always re-sent many times(Poison Message), but it's not clear how many times it is re-sent. Can we specify the re-sent time? Say after 2 times re-sent, the message is sent to another queue or topic. How to configure it?

Please help, I'm pretty new with MDB,JMS,JbossMQ.

I use JDK 1.4.0-b92, MySQL 4.0.16,Windows 2000, and JBoss 3.2.2(of course)

Thanks for your answers,
Fredrich

[genman]

"Fredrich" wrote:
Hi gurus,

I have few questions :

1).How send the_message_sent_to_a_MDB_but_always_rollback(a.k.a Poison Message) to another USER DEFINED QUEUE OR TOPIC rather than DLQ queue? I would like to see the way you configure JBoss.

The file server/default/conf/standardjboss.xml allows to create a container configuration which will put the dead letters into a queue of your choice. You'll have to then apply this configuration to a particular MDB or set of them. Adrian discusses a way to create a "singleton" MDB, you can mirror what he did for configuring this.

"Fredrich" wrote:

2).DLQ Handler always react when a message is always re-sent many times(Poison Message), but it's not clear how many times it is re-sent. Can we specify the re-sent time? Say after 2 times re-sent, the message is sent to another queue or topic. How to configure it?

It is set to 10. See "standardjboss.xml":
10

You can also change this per message.

Message m;
m.setIntProperty("JMS_JBOSS_REDELIVERY_LIMIT". 5)

for example.