Should the ServiceControllerLifecycleCallback be unregistering mbeans in uninstall()? It's doing the registration in install(), but I'm not seeing any unregister call (unless it's buried in the KernelController.) I'm seeing problems with this in the EJB3 testsuite where I have an @JMX bean that gets deployed/undeployed in one test class and then deployed again in another. The initial undeploy goes fine: | 2007-12-11 12:19:33,855 DEBUG [org.jboss.system.microcontainer.jmx.ServiceControllerLifecycleCallback] Unregistering MBean jboss.cache:service=OptimisticEJB3EntityTreeCache | 2007-12-11 12:19:33,855 DEBUG [org.jboss.system.ServiceController] destroying service: jboss.cache:service=OptimisticEJB3EntityTreeCache | 2007-12-11 12:19:33,855 DEBUG [org.jboss.cache.CacheStatus] Ignoring call to stop() as current state is DESTROYED | 2007-12-11 12:19:33,855 DEBUG [org.jboss.cache.CacheStatus] Ignoring call to destroy() as current state is DESTROYED | 2007-12-11 12:19:33,861 DEBUG [org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext] Removed component OptimisticTestEJB3EntityCacheRuntimeConfig from vfsfile:/home/bes/dev/jboss/clean/trunk/ejb3/output/test-lib/optimistic-entity-cache-beans.xml | 2007-12-11 12:19:33,862 DEBUG [org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext] Removed component OptimisticTestEJB3EntityDefaultLRUConfig from vfsfile:/home/bes/dev/jboss/clean/trunk/ejb3/output/test-lib/optimistic-entity-cache-beans.xml But then a subsequent deploy of the same -beans.xml fails because the old registration is still there: 2007-12-11 12:19:36,352 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] Error installing to Configured: name=OptimisticTestEJB3EntityCache state=Configured | java.lang.Exception: Error calling callback JMXAdvice for target context OptimisticTestEJB3EntityCache | at org.jboss.dependency.plugins.AbstractLifecycleCallbackItem.install(AbstractLifecycleCallbackItem.java:86) | .... | Caused by: javax.management.InstanceAlreadyExistsException: jboss.cache:service=OptimisticEJB3EntityTreeCache already registered. | at org.jboss.mx.server.registry.BasicMBeanRegistry.add(BasicMBeanRegistry.java:767) | at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:236) | .... | at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1426) | at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:376) | at org.jboss.system.microcontainer.jmx.ServiceControllerLifecycleCallback.install(ServiceControllerLifecycleCallback.java:90) | .... | at org.jboss.dependency.plugins.AbstractLifecycleCallbackItem.install(AbstractLifecycleCallbackItem.java:82) | ... 76 more View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4112076#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...