javax.naming.NamingException:

This one is not a pure MDM error but a simple EJB error.I was trying to create a HelloWorld EJB & run it.

Jul 15, 2010 12:30:26 PM com.ibm.ws.util.ImplFactory

WARNING: WSVR0073W

Exception in thread "P=225643:O=0:CT" javax.naming.NamingException: Failed to initialize the ORB [Root exception is org.omg.CORBA.INITIALIZE: Unable to init plugins  vmcid: IBM  minor code: 504  completed: No]

      at com.ibm.ws.naming.util.Helpers.getOrb(Helpers.java:318)

      at com.ibm.ws.naming.util.WsnInitCtxFactory.getInitialContextInternal(WsnInitCtxFactory.java:392)

      at com.ibm.ws.naming.util.WsnInitCtx.getContext(WsnInitCtx.java:117)

      at com.ibm.ws.naming.util.WsnInitCtx.getContextIfNull(WsnInitCtx.java:712)

      at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:171)

      at javax.naming.InitialContext.lookup(InitialContext.java:363)

      at com.ust.client.ClientEJB.main(ClientEJB.java:13)

Caused by: org.omg.CORBA.INITIALIZE: Unable to init plugins  vmcid: IBM  minor code: 504  completed: No

      at com.ibm.rmi.corba.PluginRegistry.initPlugin(PluginRegistry.java:229)

      at com.ibm.rmi.corba.PluginRegistry.initPlugins(PluginRegistry.java:210)

      at com.ibm.rmi.corba.PluginRegistry.initPlugins(PluginRegistry.java:216)

      at com.ibm.rmi.corba.ORB.initializePlugins(ORB.java:571)

      at com.ibm.rmi.corba.ORB.orbParameters(ORB.java:1319)

      at com.ibm.rmi.corba.ORB.set_parameters(ORB.java:1206)

      at com.ibm.CORBA.iiop.ORB.set_parameters(ORB.java:1662)

      at org.omg.CORBA.ORB.init(ORB.java:364)

      at com.ibm.ws.orb.GlobalORBFactory.init(GlobalORBFactory.java:86)

      at com.ibm.ejs.oa.EJSORBImpl.initializeORB(EJSORBImpl.java:179)

      at com.ibm.ejs.oa.EJSClientORBImpl.(EJSClientORBImpl.java:83)

      at com.ibm.ejs.oa.EJSClientORBImpl.(EJSClientORBImpl.java:59)

      at com.ibm.ejs.oa.EJSORB.init(EJSORB.java:102)

      at com.ibm.ws.naming.util.Helpers.getOrb(Helpers.java:309)

      ... 6 more

Caused by: java.lang.NoClassDefFoundError: Invalid Implementation Key, com.ibm.CORBA.iiop.WLMPlugin

      at com.ibm.ws.util.ImplFactory.loadClassFromKey(ImplFactory.java:363)

      at com.ibm.ws.util.ImplFactory.loadClassFromKey(ImplFactory.java:354)

      at com.ibm.ws.wlm.Factory$2.run(Factory.java:98)

      at java.security.AccessController.doPrivileged(AccessController.java:241)

      at com.ibm.ws.wlm.Factory.loadClass(Factory.java:96)

      at com.ibm.ws.wlm.client.WLMClient.init(WLMClient.java:130)

      at com.ibm.rmi.corba.PluginRegistry.initPlugin(PluginRegistry.java:224)

      ... 19 more

Solution:

Add com.ibm.ws.webservices.thinclient_6.1.0.jar & com.ibm.ws.admin.client_6.1.0.jar to your client project & run again .