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JBoss 4.2.3 JMS Threads accumulate -> crash

Markus Schmider
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I have to fix an application which heavily relies on messaging.
When we put some load on it, it eventually crashes with

With a profiling tool we see
UIL2.SocketManagerWriteTask Threads accumulating.
I have had this problem before, it had been caused by JMS connections which had not been closed.
I have looked through the codes and have not found any senders, sessions or connection which are not closed.

When I put the log level of to TRACE I get a lot of

What does that mean? Is it pertinent to my problem?

Thanks for any hints,


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