Error when connecting JProfiler to JBoss 4

Question

I want to profile a Java EE application runs on JBoss 4. I use Ubuntu . Java 1.5. JProfiler 8.0.1. Server is Jboss 4. Once I set the host as localhost and try to profile,(New Session -> Attach -> Attach to profile JVM(Local or remote) ) JProfiler says, "Could not connect to localhost:8849. Please make sure that the remote address is correct ". But in the terminal, it shows the JBoss starting and I can access the web applications as well. I want to trace all creating java Ojbects and their sizes. How can I solve this issue ?

EDIT: The error log file of JProfiler shows.

sun.awt.X11.XException: Cannot write XdndAware property
at sun.awt.X11.XDnDDropTargetProtocol.registerDropTarget(Unknown Source)
at sun.awt.X11.XDropTargetRegistry.registerDropSite(Unknown Source)
at sun.awt.X11.XWindowPeer.addDropTarget(Unknown Source)
at sun.awt.X11.XComponentPeer.addDropTarget(Unknown Source)
at java.awt.dnd.DropTarget.addNotify(Unknown Source)
at java.awt.Component.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addNotify(Unknown Source)
at javax.swing.JComponent.addNotify(Unknown Source)
at java.awt.Container.addImpl(Unknown Source)
at java.awt.Container.add(Unknown Source)
at com.ejt.framework.gui.aq.b(ejt:290)
at com.ejt.framework.wizard.o.b(ejt:43)
at com.ejt.framework.wizard.o.<init>(ejt:18)
at com.ejt.framework.wizard.g.b(ejt:125)
at com.jprofiler.frontend.d.a.p.actionPerformed(ejt:29)
at com.jprofiler.frontend.g.g.l(ejt:63)
at com.jprofiler.frontend.g.g.a(ejt:17)
at com.jprofiler.frontend.g.h.run(ejt:56)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$400(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Answer 1

Probably JBoss is not profiled, ie the profiling agent is not loaded.

You have to use the integration wizard to modify the JBoss start script.

Invoke

Session->Integration wizards->New Server Integration

select JBoss 4.x and follow the steps in the wizard.