Is there an MBean for a deployed entity EJB?

Question

Hi,
I need to access the method invocation times, availability, remove count, create count etc. of a deployed entity EJB through JMX MBean, in JBoss.
I have deployed the entity bean and the stateless DAO bean that operates on the entity bean. I do find an MBean for this DAO in the JMX-console of JBoss, but not an MBean for the entity EJB.
a) Why do I not find an MBean for the same?
b) How is it possible to get the MBean created for the entity EJB?
Speedy help solicited.
Thanks a bunch in advance guys !

Answer 1

When executing an operation via JMX using JConsole, I get the following error:
Problem invoking getManifest : java.rmi.UnmarshallException: Error unmarshalling return: nested is: java.lang.ClassNotFoundException: foo.bar.InernalServiceException (no security manager: RMI class loader disabled)
Code snippet:
public ArrayList getManifest(String s) throws InternalServiceException, MBeanException{
String path = ".\\foo_services.jar"; // Invalid path on purpose to test exception...
File file = new File(path);
FileInputStream fileInput;
try {
fileInput = new FileInputStream(file);
} catch (FileNotFoundException e) {
String msg = "The manifest file is not found in the given path";
if (logger.isErrorEnabled()) logger.error(msg);
throw new InternalServiceException(msg, ErrorConstants.JMX_FILE_NOT_FOUND);
If I throw new RuntimeException(msg, e) instead of InternalServiceException(msg, ErrorConstants.JMX_FILE_NOT_FOUND), it works and I get the appropriate exception.
What is the reason for this?