[jboss-user] [Messaging, JMS & JBossMQ] - JBoss doesnt release threads after executing MDB (out of Mem

[suhail]

Hi, 
I am using JBoss AS jboss-4.0.2. 
I am getting OutOfMemoryError when I send the messages to an MDB. It happens after i send 30-40 messages. What I have observed on the web-console of Jboss is that #Threads increases by some 30 whenever I sent one message to a queue. Even though message is getting consumed instantly, the thread count doesn?t come down but keep on increasing by a factor of approx 30 or more with each message. After sometime it reaches some 2000 figure and server starts giving out of memory error. If I make process synchronous (I mean not use MDB) , thread count doesnt increase. 
It implies that each message is adding approx. 30 threads and threads are not released after messages are getting consumed. Can anybody explain it and give a fix ? 
Please find the stack of errors below. I get either of these two stacks. 

Any help will be appreciated. 
Thank you 
Suhail 

20 Dec 2006 16:20:10,176 WARN (UILServerILService Accept Thread:) [org.jboss.mq.il.uil2.UILServerILService] Unexpected error in setup of client connection 
java.lang.OutOfMemoryError: unable to create new native thread 
at java.lang.Thread.start0(Native Method) 
at java.lang.Thread.start(Thread.java:574) 
at org.jboss.mq.il.uil2.SocketManager.start(SocketManager.java:147) 
at org.jboss.mq.il.uil2.UILServerILService.run(UILServerILService.java:162) 
at java.lang.Thread.run(Thread.java:595) 


20 Dec 2006 13:18:35,031 ERROR (TimeoutFactory-0:) [org.jboss.logging.Log4jService$ThrowableListenerLoggingAdapter] Unhandled Throwable 
org.jboss.util.threadpool.ThreadPoolFullException: java.lang.OutOfMemoryError: unable to create new native thread 
at org.jboss.util.threadpool.BasicThreadPool.execute(BasicThreadPool.java:417) 
at org.jboss.util.threadpool.BasicThreadPool.runTaskWrapper(BasicThreadPool.java:192) 
at org.jboss.util.threadpool.BasicThreadPool.run(BasicThreadPool.java:212) 
at org.jboss.util.threadpool.BasicThreadPool.run(BasicThreadPool.java:206) 
at org.jboss.util.timeout.TimeoutFactory.doWork(TimeoutFactory.java:223) 
at org.jboss.util.timeout.TimeoutFactory.access$000(TimeoutFactory.java:41) 
at org.jboss.util.timeout.TimeoutFactory$1.run(TimeoutFactory.java:136) 



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