IBM User Guide for Java V7 on Windows > Troubleshooting and support > Problem determination > ORB problem determination > Common problems

Client and server are running, but not naming service

An example of the error messages that are generated from this process.

The output is:

Hello Client exception:Cannot connect to ORB
Javax.naming.CommunicationException:
        Cannot connect to ORB.Root exception is org.omg.CORBA.COMM_FAILURE  minor code:1 completed:No
               at com.ibm.rmi.iiop.ConnectionTable.get(ConnectionTable.java:145)
               at com.ibm.rmi.iiop.ConnectionTable.get(ConnectionTable.java:77)
               at com.ibm.rmi.iiop.GIOPImpl.createRequest(GIOPImpl.java:98)
               at com.ibm.rmi.iiop.GIOPImpl.createRequest(GIOPImpl.java:75)
               at com.ibm.rmi.corba.ClientDelegate.createRequest(ClientDelegate.java:440)
               at com.ibm.rmi.corba.InitialNamingClient.resolve(InitialNamingClient.java:197)
               at com.ibm.rmi.corba.InitialNamingClient.cachedInitialReferences(InitialNamingClient.j
               at com.ibm.rmi.corba.InitialNamingClient.resolve_initial_references(InitialNamingClien
               at com.ibm.rmi.corba.ORB.resolve_initial_references(ORB.java:1269)
               .........

You must start the Java™ IDL name server before an application or applet starts that uses its naming service. Installation of the Java IDL product creates a script (Solaris: tnameserv) or executable file that starts the Java IDL name server.

Start the name server so that it runs in the background. If you do not specify otherwise, the name server listens on port 2809 for the bootstrap protocol that is used to implement the ORB resolve_initial_references() and list_initial_references() methods.

Specify a different port, for example, 1050, as follows:

 tnameserv -ORBInitialPort 1050

Clients of the name server must be made aware of the new port number. Do this by setting the org.omg.CORBA.ORBInitialPort property to the new port number when you create the ORB object.

Parent: Common problems

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