Unmarshal Exception while accessing operations in the MBeans

Question

Hi,
I am using jconsole to monitor my application.Here my MBeane shows "Attribute" and "Operation" nodes .When i access the operation .It throws an exception like "java.rmi.unmarshalException:error unmarshalling return;" .Please help me to solve this problem.

Answer 1

Hi,
Yes.you are correct.I am using Jconsole to monitor Hibernate.Instead of using RMI.Can i use some other way to connect with JConsole.
i read some other forum comments . i.e)
1) If you use JDK 6, you could deploy MXBeans instead of deploying MBeans
see http://blogs.sun.com/roller/page/jmxetc?entry=writing_mxbeans_is_now_a
2) You can also start jconsole so that it finds your application classes in its
classpath. In that case you will need to start jconsole with the following
flag:
jconsole -J-Djava.class.path=<jconsole.jar>:<tools.jar>:<my-custom-classes.jar>
3) You could possibly use RMI annotations but:
1) you will have to run both client and server with a security manager and
the appropriate flag to turn on RMI codebase annotations
2) you will have to make your <my-custom-classes.jar> downloadable
at the appropriate location.
see http://java.sun.com/j2se/1.5.0/docs/guide/rmi/codebase.html
for more info.
I tried first #1 and #2. It doesn't work for webapplication.Because Custom jar should be main method otherwise #2 command doesn't work.
is there any otherway communication between jconsole and server.please reply soon