Out of Memory error starting JBoss with Portal from Eclipse

Question

I cannot get JBoss Portal to start from Eclipse, though the AS alone starts fine, and the Portal starts correctly as well, when started from the command line as opposed to f

Answer 1

There are different types of OutOfMemory errors:

java.lang.OutOfMemoryError: Java heap space

Increase the -Xms and -Xmx. I'd make sure they are set at least 256m and generally it's a good idea to set them to the same value.

java.lang.OutOfMemoryError: PermGen space

Add either -XX:+CMSPermGenSweepingEnabled or increase the PermGen size: -XX:PermSize=256m

java.lang.OutOfMemoryError: GC overhead limit exceeded

Add more heap, the garbage collector can't free enough memory with each cycle. Also try turning on GC logging.

java.lang.OutOfMemoryError: unable to create new native thread

Decrease your heap :) This means that you have too much memory allocated to the heap that the OS doesn't have enough memory to create threads..

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Two last things, the above can be configured in jboss/bin/run.conf.

Also when starting JBoss see what -X parameters are being passed to the JVM, it prints this information by default, verify that it's what you expect it to be.