[ https://jira.jboss.org/jira/browse/JBAS-7818?page=com.atlassian.jira.plug... ] jaikiran pai commented on JBAS-7818: ------------------------------------ Scott, It appears that with the recent changes around this, the following lookup: MBeanServerConnection adaptor = (MBeanServerConnection) ctx.lookup("jmx/rmi/RMIAdaptor"); runs into issues (in EJB3 testsuite). This throws a: javax.naming.Reference cannot be cast to javax.management.MBeanServerConnection java.lang.ClassCastException: javax.naming.Reference cannot be cast to javax.management.MBeanServerConnection at org.jboss.test.JBossTestServices.getServer(JBossTestServices.java:154) at org.jboss.test.JBossTestServices.invoke(JBossTestServices.java:228) at org.jboss.test.JBossTestServices.undeploy(JBossTestServices.java:364) at org.jboss.test.JBossTestSetup.undeploy(JBossTestSetup.java:197) at org.jboss.test.JBossTestCase$1.tearDown(JBossTestCase.java:333) at junit.extensions.TestSetup$1.protect(TestSetup.java:24) at junit.extensions.TestSetup.run(TestSetup.java:27) The root cause appears to be the class org.jboss.system.server.jmx.JMXAdapter (present in JBOSS_HOME/lib/jboss-system.jar) missing from the client classpath (which uses the jars in JBOSS_HOME/client folder, especially jbossall-client.jar). Looking at the name of that class, i don't think it would be appropriate to include that in the client jar files. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira