hello,
I meet a problem during start of my tomcat with liferay portail. After migrating liferay 5.2.3 to 6.0.6, the web server generate an error:
14:02:27,583 ERROR [MainServlet:202] java.lang.NullPointerException
java.lang.NullPointerException
at com.liferay.portal.monitoring.statistics.service.ServiceMonitorAdvice.duringFinally(ServiceMonitorAdvice.java:115)
at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:72)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy64.getBuildNumberOrCreate(Unknown Source)
at com.liferay.portal.service.ReleaseLocalServiceUtil.getBuildNumberOrCreate(ReleaseLocalServiceUtil.java:239)
at com.liferay.portal.tools.DBUpgrader.upgrade(DBUpgrader.java:84)
at com.liferay.portal.events.StartupAction.doRun(StartupAction.java:117)
at com.liferay.portal.events.StartupAction.run(StartupAction.java:47)
at com.liferay.portal.servlet.MainServlet.processStartupEvents(MainServlet.java:1166)
at com.liferay.portal.servlet.MainServlet.init(MainServlet.java:199)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4350)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4659)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3391)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:426)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1309)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590)
at java.lang.Thread.run(Thread.java:662)
It's produce frequently and the server is stopped when it's happen. Does anyone meet the same problem??
Many thanks
