Re: Blocked trying to get lock: org.apache.log4j.spi.RootLogger

laredotornado wrote:

Hi, We are using WebLogic 9.2.2 with Java 1.5.  The application is written using Struts 1.3 and log4j 1.2.15.  We found a number of errors that looked like below in our managed server's .out file.  Any ideas what might be a cause or how to troubleshoot further?  Our sys admin sadly did not preserve a thread dump:

 <Jun 30, 2009 3:00:11 PM UTC> <Error> <WebLogicServer> <BEA-000337> <[STUCK] ExecuteThread: '148' for queue: 'weblogic.kernel.Default (self-tuning)' has been busy for "604" seconds working on the request "Http Request: /myapp/hhFlow.do", which is more than the configured time (StuckThreadMaxTime) of "600" seconds. Stack trace:
Thread-135888 "[STUCK] ExecuteThread: '148' for queue: 'weblogic.kernel.Default (self-tuning)'" <alive, in native, suspended, blocked, priority=1, DAEMON> {
    -- Blocked trying to get lock: org.apache.log4j.spi.RootLogger@151f325[fat lock]
    org.apache.log4j.Category.callAppenders(Category.java:188)
    org.apache.log4j.Category.forcedLog(Category.java:379)
    org.apache.log4j.Category.log(Category.java:840)
    org.apache.commons.logging.impl.Log4JLogger.debug(Log4JLogger.java:109)
    org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:176)
    org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:303)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:176)
    org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:272)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1903)
    org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:736)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:851)
    weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:224)
    weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:108)
    weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:198)
    weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
    weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:41)
    com.myco.regui.servlets.filters.TransactionFilter.doFilter(TransactionFilter.java:23)
    weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:41)
    weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3201)
    weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:308)
    weblogic.security.service.SecurityManager.runAs(SecurityManager.java:117)
    weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1938)
    weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1860)
    weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1327)
    weblogic.work.ExecuteThread.execute(ExecuteThread.java:206)
    weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

Thanks for any feedback, - Dave