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Chapter 11. Troubleshooting Installation and Upgrade

This chapter looks at some of the most common issues that may be encountered after installing or upgrading the Red Hat JBoss Operations Network server. Other issues are also covered in the JBoss ON frequently-asked-questions.

11.1. Exceptions and Error Logs

I'm seeing null pointer exceptions for the org.apache.catalina.connector.CoyoteAdapter service. What do these mean?
Null pointer exceptions for the org.apache.catalina.connector.CoyoteAdapter service are returned when the JBoss ON 3.3 server is first installed. These errors are harmless and can be ignored. Installation will complete successfully, and both the server and the GUI will start and run properly.
I upgraded to 3.3, and there are null pointer exceptions ( in my error logs about the transport service not being registered.
When starting a server while agents are running, the server may log transport servlet errors in the logs:
Persisting new ResourceType [ModeShapePlugin:Sequencing Service(id=0)]...
2011-01-10 16:45:38,571 ERROR [org.apache.catalina.core.ContainerBase]
Servlet.service() for servlet ServerInvokerServlet threw exception
 at $Proxy424.processRequest(Unknown Source)
 at org.jboss.remoting.transport.servlet.web.ServerInvokerServlet.processRequest(
 at org.jboss.remoting.transport.servlet.web.ServerInvokerServlet.doPost(
 at javax.servlet.http.HttpServlet.service(
 at javax.servlet.http.HttpServlet.service(
This is because the remoting (communications or transport) classes are loaded early in the startup sequence, before the server is completely started. This causes some communications interruptions until the server is completely started. These errors can be ignored.
I'm seeing error messages when I install (or upgrade) my server. What do they mean?
During the upgrade, you may see error messages in the console similar to the following:
ERROR [ClientCommandSenderTask] {ClientCommandSenderTask.send-failed}Failed to send
command [Command: type=[remotepojo]; cmd-in-response=[false]; config=[{rhq.timeout=1000,
rhq.send-throttle=true}]; params=[{targetInterfaceName=org.rhq.enterprise.communications.Ping,
invocation=NameBasedInvocation[ping]}]]. Cause: org.jboss.remoting.CannotConnectException:[.....]
These can be ignored.
I upgraded to JBoss ON 3.0.1. However, I see null pointer exceptions in my server logs and the plug-ins still show version 3.0.0. (The 'Server Name' field was changed during upgrade.)
During upgrade, the process to register the upgraded server plug-ins fails with a null pointer exception. For example:
2012-03-08 20:33:34,523 ERROR [org.rhq.enterprise.server.core.plugin.ServerPluginScanner] Failed to register server plugin file [/home/hudson/jon-server-3.0.1.GA/jbossas/server/default/deploy/rhq.ear/rhq-serverplugins/rhq-serverplugin-ant-bundle-4.2.0.JON.3.0.1.GA.jar]
	at org.rhq.enterprise.server.core.plugin.ServerPluginScanner.registerServerPlugin(
This error only occurs if a different server name was entered in the configuration page when the server was upgraded. Changing the Server Name field is not supported for upgrades.
The error log is showing ErrorCode=[2289]. Why?
With Oracle, selecting the overwrite tables option when there is nothing to overwrite causes an error message with ErrorCode=[2289]. This can be ignored.

11.2. Connection Issues

I can't connect to my server after installation.
If the installer is not bound to when setting up a server, then it does not set all of the required connection properties. Specifically, the installer does not set the java.rmi.server.hostname parameter to the real value, and it uses the default of This parameter must be set to the real IP address of the server by manually editing the file. Restart the server after editing the properties file to load the changes.