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java.lang.NullPointerException with factory.createQueueConnection
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created by <a href="https://community.jboss.org/people/nigel-robbins">Nigel Robbins</a> in <i>JBoss Messaging</i> - <a href="https://community.jboss.org/message/775766#775766">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Our system works fine but after a period of time (e.g. a few days) we are getting a java.lang.NullPointerException on calling factory.createQueueConnection.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here is an extract of the code:</p><p>Hashtable<String,String> env = new Hashtable<String,String>();</p><p>env.put("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");</p><p>env.put("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces");</p><p>env.put("java.naming.provider.url",aHost+":1099");</p><p>InitialContext ctx = new InitialContext(env);</p><p>QueueConnectionFactory factory = (QueueConnectionFactory) ctx.lookup("ConnectionFactory");</p><p>connection = factory.createQueueConnection();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The stack trace is at the bottom.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>One thing we've noticed is that in wrapper.log on the server we are sending the message to, around the same time of the NullPointerException, the following is logged:</p><p>WARN   | wrapper  | 2012/11/01 10:01:34 | ------------------------------------------------------------------------</p><p>WARN   | wrapper  | 2012/11/01 10:01:34 | Shutdown: Timed out waiting for the JVM to terminate.</p><p>WARN   | wrapper  | 2012/11/01 10:01:34 | The JVM was launched with debug options so this may be because the JVM</p><p>WARN   | wrapper  | 2012/11/01 10:01:34 | is currently suspended by a debugger.  Any future timeouts during this</p><p>WARN   | wrapper  | 2012/11/01 10:01:34 | JVM invocation will be silently ignored.</p><p>WARN   | wrapper  | 2012/11/01 10:01:34 | ------------------------------------------------------------------------</p><p>INFO   | wrapper  | 2012/11/01 10:08:43 | User logged out.  Ignored.</p><p>STATUS | wrapper  | 2012/11/01 10:08:45 | Machine is shutting down.</p><p>STATUS | wrapper  | 2012/11/01 10:09:24 | --> Wrapper Started as Service</p><p>WARN   | wrapper  | 2012/11/01 10:09:25 | ------------------------------------------------------------------------</p><p>WARN   | wrapper  | 2012/11/01 10:09:25 | The JVM is being launched with a debugger enabled and could possibly be</p><p>WARN   | wrapper  | 2012/11/01 10:09:25 | suspended.  To avoid unwanted shutdowns, timeouts will be disabled,</p><p>WARN   | wrapper  | 2012/11/01 10:09:25 | removing the ability to detect and restart frozen JVMs.</p><p>WARN   | wrapper  | 2012/11/01 10:09:25 | ------------------------------------------------------------------------</p><p>STATUS | wrapper  | 2012/11/01 10:09:25 | Launching a JVM...</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any thoughts on why it's crashing on calling factory.createQueueConnection and why the JVM is restarting on the remote host ?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Note that both systems are on Windows and have the following setting in service.bat:</p><p>set JAVA_OPTS=-Xrs</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks !</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Stack trace:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>2012-11-08 09:25:53,252 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.remoting.Client.addConnectionListener(Client.java:465)</p><p>2012-11-08 09:25:53,252 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.jms.client.remoting.JMSRemotingConnection.addConnectionListener(JMSRemotingConnection.java:502)</p><p>2012-11-08 09:25:53,252 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.jms.client.container.StateCreationAspect.handleCreateConnectionDelegate(StateCreationAspect.java:101)</p><p>2012-11-08 09:25:53,252 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.aop.advice.org.jboss.jms.client.container.StateCreationAspect_z_handleCreateConnectionDelegate_12944434.invoke(StateCreationAspect_z_handleCreateConnectionDelegate_12944434.java)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.createConnectionDelegate(ClientConnectionFactoryDelegate.java)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.jms.client.JBossConnectionFactory.createConnectionInternal(JBossConnectionFactory.java:205)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.jms.client.JBossConnectionFactory.createQueueConnection(JBossConnectionFactory.java:101)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.jms.client.JBossConnectionFactory.createQueueConnection(JBossConnectionFactory.java:95)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at com.wss.turnover.JTSProcessRecord.sendGUIMessages(Unknown Source)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.jsp.jsp.JTSTurnoverProcess_jsp._jspService(JTSTurnoverProcess_jsp.java:286)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)</p><p>2012-11-08 09:25:53,268 ERROR [STDERR] (http-0.0.0.0-18080-9)                at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)</p><p>2012-11-08 09:25:53,284 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:183)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)</p><p>2012-11-08 09:25:53,299 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)</p><p>2012-11-08 09:25:53,315 ERROR [STDERR] (http-0.0.0.0-18080-9)                at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)</p><p>2012-11-08 09:25:53,315 ERROR [STDERR] (http-0.0.0.0-18080-9)                at java.lang.Thread.run(Thread.java:619)</p></div>
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