Naming services component troubleshooting tips
"Naming" is a J2EE service which publishes and provides access to resources
such as connection pools, enterprise beans, message listeners, etc, to client
processes. If you have problems in accessing a resource which otherwise appears
to be healthy, the naming service might be involved. To investigate problems
with the WebSphere Application Server Naming service:
- Browse the JVM logs for the server which is hosting the resource
you are trying to access. Messages starting with NMSV are
related to the Naming Service.
- Open the Log Analyzer on the service log of the server
which is hosting the resource you are trying to access and use it to browse error and warning messages.
- With WebSphere Application Server running, run the dumpNameSpace command
for Windows systems, or the dumpNameSpace.sh command for UNIX
and z/OS systems, and pipe, redirect, or "more" the output so
that it is easily viewed. This command results in a display of all objects
in the WebSphere Application Server namespace, including the directory path
and object name.
- If the object a client needs to access does not appear, use the administrative
console to verify that:
- The server hosting the target resource is started.
- The Web module or EJB container, if applicable, hosting the target resource
is running.
- The JNDI name of the target resource is correct and updated.
- If the problem resource is remote, that is, not on the same node as the
Name Server node, that the JNDI name is fully qualified, including the host
name. This is especially applicable to Network Deployment configurations
- View detailed information on the run-time
behavior of the WebSphere Application Server Naming service by enabling trace on the following components and reviewing
the output:
- com.ibm.ws.naming.*
- com.ibm.websphere.naming.*
- If you see an exception that appears to be CORBA related ("CORBA" appears
as part of the exception name) look for a naming-services-specific CORBA minor
code, further down in the exception stack, for information on the real cause
of the problem. For a list of naming service exceptions and explanations,
see the class com.ibm.websphere.naming.WsnCorbaMinorCodes in the Javadoc topic in the information center
.
If none of these steps solve the problem:
For current information available from IBM Support on known problems and
their resolution, see the IBM Support
page.
IBM Support has documents that can save you time gathering information needed to resolve this problem. Before opening a PMR, see the IBM Support
page.

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Troubleshooting installation problems
Searchable topic ID:
rtrb_namingcomp
Last updated: Jun 21, 2007 4:55:42 PM CDT
WebSphere Application Server Network Deployment, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.nd.doc/info/ae/ae/rtrb_namingcomp.html