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JBoss AS 6.x is getting crashed with the below error whenever I am trying to start it.

Error:

2015-12-03 16:14:18,447 ERROR [STDERR] (RMI TCP Connection(idle)) Exception in thread "RMI TCP Connection(idle)" Exception in thread "RMI TCP Connection(idle)" Exception in thread "pool-6-thread-2" java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:14:31,149 ERROR [STDERR] (pool-6-thread-2) Exception in thread "pool-6-thread-4" Exception in thread "pool-6-thread-3" java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:14:36,308 ERROR [STDERR] (RMI TCP Connection(idle)) java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:14:53,939 ERROR [STDERR] (pool-6-thread-3) java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:14:53,939 ERROR [STDERR] (pool-6-thread-4) java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:16:01,500 WARN [org.jboss.detailed.classloader.ClassLoaderManager] (pool-12-thread-2) Unexpected error during load of:org.jboss.ejb.AllowedOperationsAssociation: java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:17:49,465 ERROR [STDERR] (pool-6-thread-5) Exception in thread "pool-6-thread-5" java.lang.OutOfMemoryError: PermGen space

2015-12-03 16:17:53,442 ERROR [STDERR] (pool-6-thread-6) Exception in thread "pool-6-thread-6" java.lang.OutOfMemoryError: PermGen space

Kumar Saurabh
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Stuti Bisht
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1 Answers1

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Add this VM argument when launching JBoss :

-XX:+HeapDumpOnOutOfMemoryError

This will generate a hprof file when JBoss encounters an OutOfMemoryError .

This file can be analyzed with tools like Eclipse MAT, and tell you which objects use the more memory.

Arnaud
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