Its Urgent - UnrecoverableTransportException : UCF Error

Hi Experts,
I have customised import component extending UCFImportContainer .
When i try to import , sometimes its successful,but sometime I am getting follwing exception :

[2/23/09 14:13:57:476 MET] 191c994 SystemOut     O 67611679|FATAL|[sports : 5]
||port.impl.GAIRConnectorServlet - com.documentum.ucf.server.transport.impl.UnrecoverableTransportException:
                                       Communication servlet unable to find session for UID "18"
at com.documentum.ucf.server.transport.impl.UCFCommManager.getSession(UCFCommManager.java:62)
at com.documentum.ucf.server.transport.impl.GAIRConnectorServlet.doPost(GAIRConnectorServlet.java:60)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java:333)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:76)
at com.documentum.web.servlet.ResponseHeaderControlFilter.doFilter(ResponseHeaderControlFilter.java:303)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:132)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:71)
at com.documentum.web.servlet.CompressionFilter.doFilter(CompressionFilter.java:114)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:132)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:71)
at com.documentum.web.env.WDKController.processRequest(WDKController.java:95)
at com.documentum.web.env.WDKController.doFilter(WDKController.java:83)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:132)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:71)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:1027)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:544)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:210)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:139)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:332)
at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:120)
at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:258)
at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:657)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:463)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:937)
[2/23/09 14:23:52:701 MET] 10eb6ae ThreadMonitor W WSVR0605W: Thread "Servlet
.Engine.Transports : 4" (1a15da0) has been active for 656,223 milliseconds and may be hung.
There are 3 threads in total in the server that may be hung.
[2/23/09 14:42:13:014 MET]   5fed67 SystemOut     O 69307218|INFO |[ker$Kill-1]|
|r.transport.impl.ServerSession - UID: 18; Sending requests to client
[2/23/09 14:42:13:015 MET]   5fed67 SystemOut     O 69307219|WARN |[ker$Kill-1]|
|.transport.impl.UCFCommManager - Released called for UID 18 but no session found java.lang.Exception:
Exception Created for Stack Trace
at com.documentum.ucf.server.transport.impl.UCFCommManager.release(UCFCommManager.java:80)
at com.documentum.ucf.server.transport.impl.UCFCommManager.finishSession(UCFCommManager.java:116)
at com.documentum.web.contentxfer.ucf.UcfSessionManager.disconnectSession(UcfSessionManager.java:486)
at com.documentum.web.contentxfer.ucf.UcfSessionManager.release(UcfSessionManager.java:175)
at com.documentum.webcomponent.library.contenttransfer.UcfSessionTracker.cleanup(ContentTransferServiceContainer.java:1129)
at com.documentum.webcomponent.library.contenttransfer.UcfSessionTracker$Kill.run(ContentTransferServiceContainer.java:1197)

If anyone has any idea,please assist me in this.its an urgent requirement.
Thanks
Mandeep Kaur

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Comments

Francois Dauberlieu

Looks like you're doing something wrong with your UCF session management but without seeing code, we can't really say what

Why don't you cut down your code so you can let us see what you do ? In my private experience, I found out that I most of the times find my solution when I cut down the code to post here or send to support. Who know ?

Mandeep

I think this reply page is having some error,because its not letting me post my message by saying you cannot post an empty message.So I am trying to reply with attaching my reply in a file.Please find it attached.

Francois Dauberlieu

No, the site is Ok, it just won't let you create a blank post (attachments are not considered as being part of the post I guess)

Indeed, the attached file doesn't help much.

Did you try using your component directly from a menu entry to see if that would be the jump that causes the problem ?

When you run in Debug, on which line do you get the error ?

What are you trying to achieve ? Maybe some of us can give you pointers on other ways to do it ?