[jboss-user] [Beginners Corner] - Re: Reloading the application context

[nitha]

Hi ,

  We ae facing the same problem. Our production server crashed 4 times with in a week. when we checked the logs..... its trying to reload the context  and throws some exception  and hangs....... 

ERROR [org.apache.commons.modeler.BaseModelMBean] Exception invoking method reload
  | java.lang.NullPointerException
  |         at org.jboss.web.tomcat.tc5.WebCtxLoader.start(WebCtxLoader.java:109)
  |         at org.apache.catalina.core.StandardContext.start(StandardContext.java:4231)
  |         at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3043)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  |         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:324)
  |         at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
  |         at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:150)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642)
  |         at org.jboss.jmx.adaptor.control.Server.invokeOpByName(Server.java:236)
  |         at org.jboss.jmx.adaptor.control.Server.invokeOp(Server.java:202)
  |         at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.invokeOp(HtmlAdaptorServlet.java:241)
  |         at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.processRequest(HtmlAdaptorServlet.java:79)
  |         at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.doPost(HtmlAdaptorServlet.java:61)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
  |         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
  |         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
  |         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
  |         at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
  |         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
  |         at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:150)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
  |         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
  |         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |         at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
  |         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
  |         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
  |         at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
  |         at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
  |         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
  |         at java.lang.Thread.run(Thread.java:534)
  | 2008-10-29 05:22:13,914 ERROR [org.jboss.web.localhost.Engine] StandardWrapperValve[HtmlAdaptor]: Servlet.service() for servlet HtmlAdaptor threw exception
  | RuntimeOperationsException: Exception invoking method reload Cause: java.lang.NullPointerException
  |         at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:511)
  |         at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:150)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642)
  |         at org.jboss.jmx.adaptor.control.Server.invokeOpByName(Server.java:236)
  | 
  | 

 Any thoughts regarding this...........

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