Hi,

I am trying to experiment with MBeans in WAS 5.0.2.4.

After stopping the server using the command

$AdminControl stopServer server1

the fails to restart. When I try to restart the server using the console, I get the following error message in the System.out.log

ADMN0005E: Unable to activate MBean: type JMXConnector, collaborator com.ibm.ws.management.collaborator.DefaultRuntimeC ollaborator@6bac2d2b, configuration id RMIConnector, descriptor null.
[9/22/04 9:34:00:359 IST] d2ded0c WsServer E WSVR0003E: Server server1 failed to start
com.ibm.ws.exception.ConfigurationError: Problem initializing AdminImpl:
    at com.ibm.ws.management.component.AdminImpl.initiali ze(AdminImpl.java:413)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponent(ContainerImpl.java:706)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponents(ContainerImpl.java:643)
    at com.ibm.ws.runtime.component.ServerImpl.initialize (ServerImpl.java:96)
    at com.ibm.ws.runtime.WsServer.start(WsServer.java:11 9)
    at com.ibm.ws.runtime.WsServer.main(WsServer.java:225 )
    at java.lang.reflect.Method.invoke(Native Method)
    at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.ja va:94)
---- Begin backtrace for nested exception
com.ibm.ws.exception.RuntimeError
    at com.ibm.ws.management.component.JMXConnectors.init RMIConnector(JMXConnectors.java:447)
    at com.ibm.ws.management.component.JMXConnectors.init ializeConnectors(JMXConnectors.java:296)
    at com.ibm.ws.management.component.AdminImpl.initiali ze(AdminImpl.java:407)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponent(ContainerImpl.java:706)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponents(ContainerImpl.java:643)
    at com.ibm.ws.runtime.component.ServerImpl.initialize (ServerImpl.java:96)
    at com.ibm.ws.runtime.WsServer.start(WsServer.java:11 9)
    at com.ibm.ws.runtime.WsServer.main(WsServer.java:225 )
    at java.lang.reflect.Method.invoke(Native Method)
    at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.ja va:94)
---- Begin backtrace for nested exception
com.ibm.websphere.management.exception.AdminExcept ion: ADMN0005E: Unable to activate MBean: type JMXConnector, collaborator com.ibm.ws.management.collaborator.DefaultRuntimeC ollaborator@6bac2d2b, configuration id RMIConnector, descriptor null.
    at com.ibm.ws.management.MBeanFactoryImpl.activateMBe an(MBeanFactoryImpl.java:285)
    at com.ibm.ws.management.MBeanFactoryImpl.activateMBe an(MBeanFactoryImpl.java:213)
    at com.ibm.ws.management.component.JMXConnectors.init RMIConnector(JMXConnectors.java:437)
    at com.ibm.ws.management.component.JMXConnectors.init ializeConnectors(JMXConnectors.java:296)
    at com.ibm.ws.management.component.AdminImpl.initiali ze(AdminImpl.java:407)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponent(ContainerImpl.java:706)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponents(ContainerImpl.java:643)
    at com.ibm.ws.runtime.component.ServerImpl.initialize (ServerImpl.java:96)
    at com.ibm.ws.runtime.WsServer.start(WsServer.java:11 9)
    at com.ibm.ws.runtime.WsServer.main(WsServer.java:225 )
    at java.lang.reflect.Method.invoke(Native Method)
    at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.ja va:94)
---- Begin backtrace for nested exception
javax.management.InstanceAlreadyExistsException: JMXcr0053E The MBean " WebSphere:platform=common,cell=TWDPC0701,version=5 .0,name=RMIConnector,mbeanIdentifier=RMIConnector, type=JMXConnector,node=TWDPC0701,process=server1 " is already present in the MBeanServer
    at com.tivoli.jmx.MapAdapter.putMBean(Unknown Source)
    at com.tivoli.jmx.Registration.register(Unknown Source)
    at com.tivoli.jmx.MBeanServerImpl.registerMBean(Unkno wn Source)
    at com.ibm.ws.management.MBeanFactoryImpl.activateMBe an(MBeanFactoryImpl.java:269)
    at com.ibm.ws.management.MBeanFactoryImpl.activateMBe an(MBeanFactoryImpl.java:213)
    at com.ibm.ws.management.component.JMXConnectors.init RMIConnector(JMXConnectors.java:437)
    at com.ibm.ws.management.component.JMXConnectors.init ializeConnectors(JMXConnectors.java:296)
    at com.ibm.ws.management.component.AdminImpl.initiali ze(AdminImpl.java:407)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponent(ContainerImpl.java:706)
    at com.ibm.ws.runtime.component.ContainerImpl.initial izeComponents(ContainerImpl.java:643)
    at com.ibm.ws.runtime.component.ServerImpl.initialize (ServerImpl.java:96)
    at com.ibm.ws.runtime.WsServer.start(WsServer.java:11 9)
    at com.ibm.ws.runtime.WsServer.main(WsServer.java:225 )
    at java.lang.reflect.Method.invoke(Native Method)
    at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.ja va:94)

Is it a configuration problem?

Thanks in advance for any help on this !!!

Chitra