Monitoring MBean for an undeployed EJB module is not removed, even though all statistics under that monitoring name are moved. (ID 6191092) (Sun Java System Application Server Enterprise Edition 8.2 Release Notes)

Sun Java System Application Server Enterprise Edition 8.2 Release Notes

Monitoring MBean for an undeployed EJB module is not removed, even though all statistics under that monitoring name are moved. (ID 6191092)

Description

For example:

EJBModuleMonitorMap().size() = 1  eventhough ejb module is 
undeployed EJBModuleMonitor().getName() = sqe_ejb_s1_01

This true for both EJB modules and applications. Both programmatically (through MBean API) and through asadmin list/get, an empty monitoring MBean still exists.

Diagnostics

asadmin list -m "server.applications" shows the following output:
server.applications.MEjbApp
server.applications.__ejb_container_timer_app
server.applications.adminapp
server.applications.admingui
server.applications.com_sun_web_ui
server.applications._export_install_nov-11_domains_domain1_applications
_j2ee-modules_sqe_ejb_s1_01

You can look at statistics:

bin/asadmin list -m "server.applications._export_install_nov-11_domains
_domain1_applications_j2ee-modules_sqe_ejb_s1_01"
server.applications._export_install_nov-11_domains_domain1_applications_
j2ee-modules_sqe_ejb_s1_01.SQEMessage
server.applications._export_install_nov-11_domains_domain1_applications_
j2ee-modules_sqe_ejb_s1_01.TheGreeter

Once you undeploy:

_export_install_nov-11_domains_domain1_applications_j2ee-modules_sqe_
ejb_s1_01

If you do a list command, you still see the application:

asadmin list -m "server.applications"
server.applications.MEjbApp
server.applications.__ejb_container_timer_app
server.applications._export_install_nov-11_domains_domain1_applications_
j2ee-modules_sqe_ejb_s1_01
server.applications.adminapp
server.applications.admingui
server.applications.com_sun_web_ui

but it does not contain any monitoring statistics:

asadmin list -m "server.applications._export_install_nov-11_domains_
domain1_applications_j2ee-modules_sqe_ejb_s1_01"
Nothing to list at server.applications.-export-install-nov-11-domains-
domain1-applications-j2ee-modules-sqe-ejb-s1-01.

To get the valid names beginning with a string, use the wildcard (`*') character. For example, to list the names of all the monitorable entities that begin with server, use list "server.*".

Solution

This is harmless. Module can be safely redeployed with out any problems. The root monitoring Mbean is not removed, but it is empty.