topic [RESOLVED] MBeanExporter error on startup in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/resolved-mbeanexporter-error-on-startup/m-p/244505#M197635 <HTML><HEAD></HEAD><BODY><SPAN>Hi All,</SPAN><BR /><BR /><SPAN>I am trying to test a backup i've created of my production Alfresco instance on a development box. My environments are the same - Tomcat version 6.0.18, Windows Server 2003, Alfresco Version 3.0.0. I used exactly the same war file to set up the development environment. There is a slight difference in the Java versions - Production has Java 1.6 u16, while development has Java 1.6 u18. I've followed the instructions in the Wiki on backup and restore </SPAN><A href="http://wiki.alfresco.com/wiki/Backup_and_Restore" rel="nofollow noopener noreferrer">http://wiki.alfresco.com/wiki/Backup_and_Restore</A><SPAN> to back up the Production Alfresco. </SPAN><BR /><BR /><SPAN>When I try to restore the backup, I get the below error about the class, MBeanExporter;</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />13:40:33,201&nbsp; INFO&nbsp; [config.xml.XMLConfigService$PropertyConfigurer] Loading properties file from class path resource [alfresco/file-servers.properties]<BR />13:40:35,139&nbsp; ERROR [web.context.ContextLoader] Context initialization failed<BR />org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'exporter' defined in class path resource [alfresco/core-services-context.xml]: Invocation of init method failed; nested exception is javax.management.RuntimeMBeanException: RuntimeException thrown in preDeregister method<BR />Caused by: javax.management.RuntimeMBeanException: RuntimeException thrown in preDeregister method<BR />&nbsp;&nbsp; at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.preDeregisterInvoke(DefaultMBeanServerInterceptor.java:1050)<BR />&nbsp;&nbsp; at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.exclusiveUnregisterMBean(DefaultMBeanServerInterceptor.java:421)<BR />&nbsp;&nbsp; at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.unregisterMBean(DefaultMBeanServerInterceptor.java:403)<BR />&nbsp;&nbsp; at com.sun.jmx.mbeanserver.JmxMBeanServer.unregisterMBean(JmxMBeanServer.java:506)<BR />&nbsp;&nbsp; at org.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:175)<BR />&nbsp;&nbsp; at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:589)<BR />&nbsp;&nbsp; at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:565)<BR />&nbsp;&nbsp; at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:494)<BR />&nbsp;&nbsp; at org.springframework.jmx.export.MBeanExporter.afterPropertiesSet(MBeanExporter.java:388)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1201)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1171)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:425)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)<BR />&nbsp;&nbsp; at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)<BR />&nbsp;&nbsp; at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)<BR />&nbsp;&nbsp; at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:244)<BR />&nbsp;&nbsp; at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:187)<BR />&nbsp;&nbsp; at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)<BR />&nbsp;&nbsp; at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)<BR />&nbsp;&nbsp; at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)<BR />&nbsp;&nbsp; at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1247)<BR />&nbsp;&nbsp; at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:604)<BR />&nbsp;&nbsp; at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:129)<BR />&nbsp;&nbsp; at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)<BR />&nbsp;&nbsp; at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)<BR />&nbsp;&nbsp; at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)<BR />&nbsp;&nbsp; at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)<BR />&nbsp;&nbsp; at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)<BR />&nbsp;&nbsp; at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)<BR />&nbsp;&nbsp; at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)<BR />&nbsp;&nbsp; at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:269)<BR />&nbsp;&nbsp; at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:81)<BR />&nbsp;&nbsp; at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)<BR />&nbsp;&nbsp; at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)<BR />&nbsp;&nbsp; at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)<BR />&nbsp;&nbsp; at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)<BR />&nbsp;&nbsp; at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)<BR />&nbsp;&nbsp; at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)<BR />&nbsp;&nbsp; at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)<BR />&nbsp;&nbsp; at java.lang.Thread.run(Thread.java:619)<BR />Caused by: java.lang.NullPointerException<BR />&nbsp;&nbsp; at org.apache.log4j.jmx.AbstractDynamicMBean.preDeregister(AbstractDynamicMBean.java:119)<BR />&nbsp;&nbsp; at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.preDeregisterInvoke(DefaultMBeanServerInterceptor.java:1048)<BR />&nbsp;&nbsp; … 42 more<BR />log4j:ERROR LogMananger.repositorySelector was null likely due to error in class reloading, using NOPLoggerRepository.<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><BR /><SPAN>I've investigated this MBeanExporter class and found that it is contained inside Spring 2.0.6.jar, however I cant find anywhere to download this source to look into it further. The xml file where the 'exporter' object is configured (core-services-context.xml) is exactly the same for the Production and Development environments, but it does not cause an error in Production.</SPAN><BR /><BR /><SPAN>Does anyone have any ideas on what I should try next?&nbsp; Any help would be greatly appreciated! <img id="smileyhappy" class="emoticon emoticon-smileyhappy" src="https://connect.hyland.com/i/smilies/16x16_smiley-happy.png" alt="Smiley Happy" title="Smiley Happy" /></SPAN><BR /><BR /><SPAN>Many thanks!</SPAN></BODY></HTML> Thu, 11 Feb 2010 04:19:59 GMT tara_b 2010-02-11T04:19:59Z [RESOLVED] MBeanExporter error on startup https://connect.hyland.com/t5/alfresco-archive/resolved-mbeanexporter-error-on-startup/m-p/244505#M197635 Hi All,I am trying to test a backup i've created of my production Alfresco instance on a development box. My environments are the same - Tomcat version 6.0.18, Windows Server 2003, Alfresco Version 3.0.0. I used exactly the same war file to set up the development environment. There is a slight diffe Thu, 11 Feb 2010 04:19:59 GMT https://connect.hyland.com/t5/alfresco-archive/resolved-mbeanexporter-error-on-startup/m-p/244505#M197635 tara_b 2010-02-11T04:19:59Z Re: [RESOLVED] MBeanExporter error on startup https://connect.hyland.com/t5/alfresco-archive/resolved-mbeanexporter-error-on-startup/m-p/244506#M197636 <HTML><HEAD></HEAD><BODY><SPAN>I think there was a problem with my MySQL instance. I reinstalled MySQL, and restarted Alfresco and I am not getting this problem. I think hibernate was silently dying.</SPAN></BODY></HTML> Sat, 13 Feb 2010 06:05:45 GMT https://connect.hyland.com/t5/alfresco-archive/resolved-mbeanexporter-error-on-startup/m-p/244506#M197636 tara_b 2010-02-13T06:05:45Z