java.lang.OutOfMemoryError: Java heap space - only with EJB3 remote

[dattguru]

Hello,

1) Deployed a .ear application with .jar(EJB3) and .war(Struts2) on Jboss-4.3GA.  From Browser application is running fine without OutofMemory error. 

2) But when Invoked the same .ear application(EJB3) from a standalone client with (-Xmx1024m) and server(-Xmx1024m) is throwing exception.

3) My Question is: How and Why only remote(EJB3) application call throwing OutOfMemory error, when the same application(same configuration) is running fine inside the Jboss-4.3GA.

thanks

-Datt

Environment:  

   Server OS: x86_64 x86_64 x86_64 GNU/Linux, JBoss-4.3GA

Exception:

java.net.SocketException: Broken pipe

        at java.net.SocketOutputStream.socketWrite0(Native Method)
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
        at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
        at java.io.BufferedOutputStream.write(BufferedOutputStream.java:109)
        at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1685)
        at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(ObjectOutputStream.java:1594)
        at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1173)
        at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1127)
        at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
        at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
        at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1398)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:305)
        at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.sendObjectVersion2_2(JavaSerializationManager.java:120)
        at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.sendObject(JavaSerializationManager.java:95)
        at org.jboss.remoting.marshal.serializable.SerializableMarshaller.write(SerializableMarshaller.java:120)
        at org.jboss.remoting.transport.socket.ServerThread.versionedWrite(ServerThread.java:861)
        at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:642)
        at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:407)
        at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:174)

[wdfink]

I only see a SocketException!

Where the OutOfMemoryEx is thrown? Client or server side?

How your PermGenSpace is configured?

[peterj]

Regarding question 3, when accessing an EJB from within the app server, that access is done by reference. When accessing EJBs remotely it is done by value, which means that data passed back-and forth for the EJB calls must be serialized; thus it will use more memory.

What have you done to monitor heap usage? Have you used any command line options to turn on gc statistics or to dump the heap when you run out of memory?