1 Reply Latest reply on Oct 7, 2012 9:00 AM by pgarner

Infrequent NoSuchEJBException: JBAS016055: EJB has been removed after session timeout, browser refresh

pgarner Oct 6, 2012 8:42 PM

I have a facelet that refreshes the browser window 30 seconds after session timeout e.g.

	<a4j:region>
	<h:form>
	<a4j:poll id="poll" interval="#{(session.maxInactiveInterval + 30)*1000}" onbegin="window.document.location.href='/Patrac'"/>
	</h:form>
	</a4j:region>

The facelet, when reloaded, causes a method to be invoked on a SFSB e.g.

<ui:define name="title">PATRAC - #{workflowManager.currentWorkflow.screenTitle}</ui:define>

@SessionScoped

@Stateful

public class WorkflowManager {

...

public Workflow getCurrentWorkflow() { return currentWorkflow; }

@PreDestroy public void bye() { System.out.println("Destroying: "+ getClass().getName() +", ID = "+ getId()); }

}

85 percent of the time the screen is refreshed without incident:

15:56:44,951 INFO [stdout] (http-/127.0.0.1:8443-1) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -1906221148858801782

15:56:44,968 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/

15:58:01,343 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -3546919396833964128

15:58:15,288 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-3) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

15:58:15,319 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-4) NoCacheFilter.doFilter() URI: /Patrac/

15:58:15,349 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-3) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

15:58:15,389 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-4) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

15:59:45,771 INFO [stdout] (http-/127.0.0.1:8443-1) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -5655846827584878649

15:59:45,777 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

15:59:45,800 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-1) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

15:59:45,890 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:00:01,356 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = 4579100734353654546

16:01:01,363 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = 4317425328092070112

16:01:16,518 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-3) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:01:16,526 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-8) NoCacheFilter.doFilter() URI: /Patrac/

16:01:16,544 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-3) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

16:01:16,572 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-3) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:02:46,894 INFO [stdout] (http-/127.0.0.1:8443-1) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = 7360031599060690367

16:02:46,900 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:02:46,923 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-6) NoCacheFilter.doFilter() URI: /Patrac/

16:02:46,950 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-1) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

16:02:46,975 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:03:01,380 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -5741388414554084710

16:04:01,389 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -1149102875316717372

16:04:01,395 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -7198492156368620025

16:04:17,355 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-7) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:04:17,365 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-8) NoCacheFilter.doFilter() URI: /Patrac/

16:04:17,405 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-7) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

16:04:17,460 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-8) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:05:47,769 INFO [stdout] (http-/127.0.0.1:8443-7) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -8106288024707282506

16:05:47,773 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-7) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:05:47,808 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-6) NoCacheFilter.doFilter() URI: /Patrac/

16:05:47,809 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-7) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

16:05:47,856 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-7) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:06:01,409 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = 6737131848251158629

16:07:01,419 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -3248726216386741006

16:07:01,423 INFO [stdout] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = -7798326820709515585

16:07:18,188 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-8) NoCacheFilter.doFilter() URI: /Patrac/

16:07:18,188 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:07:18,219 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-1) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

16:07:18,250 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-1) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

However, sometimes the following happens:

16:08:48,536 INFO [stdout] (http-/127.0.0.1:8443-7) Destroying: com.patrac.controller.statemachine.WorkflowManager, ID = 601708170643229812

16:08:48,537 INFO [com.patrac.filter.NoCacheFilter] (http-/127.0.0.1:8443-7) NoCacheFilter.doFilter() URI: /Patrac/index.xhtml

16:08:48,540 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host]] (http-/127.0.0.1:8443-3) Exception sending request initialized lifecycle event to listener instance of class org.jboss.weld.servlet.WeldListener: javax.ejb.NoSuchEJBException: JBAS016055: EJB has been removed

at org.jboss.as.weld.ejb.StatefulSessionObjectReferenceImpl.getBusinessObject(StatefulSessionObjectReferenceImpl.java:124) [jboss-as-weld-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]

at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:108) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:105) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at com.patrac.controller.statemachine.WorkflowManager$Proxy$_$$_Weld$Proxy$.toString(WorkflowManager$Proxy$_$$_Weld$Proxy$.java) [Patrac-ejb.jar:]

at java.lang.String.valueOf(String.java:2854) [rt.jar:1.7.0_07]

at java.lang.StringBuilder.append(StringBuilder.java:128) [rt.jar:1.7.0_07]

at org.jboss.weld.context.SerializableContextualInstanceImpl.toString(SerializableContextualInstanceImpl.java:60) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at java.lang.String.valueOf(String.java:2854) [rt.jar:1.7.0_07]

at java.lang.StringBuilder.append(StringBuilder.java:128) [rt.jar:1.7.0_07]

at org.jboss.weld.context.beanstore.AttributeBeanStore.attach(AttributeBeanStore.java:109) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at org.jboss.weld.context.AbstractBoundContext.activate(AbstractBoundContext.java:66) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at org.jboss.weld.servlet.WeldListener.requestInitialized(WeldListener.java:141) [weld-core-1.1.9.Final.jar:2012-08-06 19:12]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) [jbossweb-7.0.17.Final.jar:]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.17.Final.jar:]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.17.Final.jar:]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:372) [jbossweb-7.0.17.Final.jar:]

at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:897) [jbossweb-7.0.17.Final.jar:]

at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:634) [jbossweb-7.0.17.Final.jar:]

at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2039) [jbossweb-7.0.17.Final.jar:]

at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_07]

16:08:48,561 WARNING [com.patrac.controller.exceptionhandler.ViewExpiredExceptionHandler] (http-/127.0.0.1:8443-7) Attempt to access an expired view: /index.xhtml from remote host: 127.0.0.1

The stack trace always appears in the browser window, so this happens after the browser makes a request when the session is timed out. It only happens when the request is received at nearly the same time that the SFSB is destroyed (within milliseconds). It never happens upon logout, although the 302 REDIRECT causes the brower to make a request only milliseconds after the SFSB is destroyed. It seems to be that not only is timing a factor but also a ViewExpiredException is thrown every time this happens.

How can I handle the NoSuchEJBException, or better yet to avoid it altogether?

1. Re: Infrequent NoSuchEJBException: JBAS016055: EJB has been removed after session timeout, browser refresh

pgarner Oct 7, 2012 9:00 AM (in response to pgarner)

It seems as though what's happening is that because the session times out but the EJB is not immediately removed, when the browser makes a request JBoss removes the EJB from the timed out session and then throws the exception that the EJB has been removed instead of first creating a new EJB and binding it to the new session.
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