8 Replies Latest reply on May 17, 2010 2:16 AM by kreynolds.kent.reynolds.tcg.com

    System hangs intermediately

      The system hangs intermittently. What happens is that when you're requesting a page, the system shows the message (1 item remaining) ... in the bottom of the screen, along with a progress bar. This waiting loop does not seem to end (I've waited 5 minutes and more).


      The issue is not predictable. However, it happens quite often: anyone clicking around in the interface a few minutes is highly likely to come across it. Therefore I consider it reproducible. It can be overcome by clicking on another module and then navigating back to the page you wanted: when you go back a second time it usually works. But I think the issue should be solved.


      There isn't any one particular screen. It can happen on any screen. It isn't exactly predictable, but it is reproducible, because it happens fairly often. Just click around the application, go from one module to the other, perform some searches, view some entities... On every page you view, you do have to wait until it finishes loading before going to the next page. If you do this, the error is bound to occur within 5 minutes.

        • 1. Re: System hangs intermediately
          kreynolds.kent.reynolds.tcg.com

          I am experiencing the same problem.  Anyone have any hints about this?

          • 2. Re: System hangs intermediately
            kreynolds.kent.reynolds.tcg.com

            Forgot to add...running version: Seam 2.2.0.GA

            • 3. Re: System hangs intermediately
              kreynolds.kent.reynolds.tcg.com

              Bump...


              Anyone else experience this issue?  Could not find in Jira.


              Thanks.

              • 4. Re: System hangs intermediately
                asookazian

                Opening a JIRA for this won't help unless it's very easily reproducible (i.e., here are the n steps to execute to reproduce the problem, etc.)


                I recommend trouble-shooting using Firebug and then determine which frmwk or layer the problem is associated with (i.e. isolate the root cause).  This is a strange one, I've never seen it...


                What version of JBoss or other app server are you using?


                Have you ruled out the RDBMS hanging (i.e. is it a query that's hanging?)

                • 5. Re: System hangs intermediately
                  elfuhrer

                  Can you narrow down to where hanging is taking place?


                  How to reproduce it? I've never seen anything like that


                  Can you describe your environment? OS, RDBMS, JBoss Version and anything that might helpful.


                  Posting some code would be helpful as well.

                  • 6. Re: System hangs intermediately
                    kreynolds.kent.reynolds.tcg.com
                    Here is a screen share demo of what happens (40 secs long...):

                    http://www.youtube.com/watch?v=pS9ONj1fhi0

                    So what happens is I have pagination with a modal pop up.  When the page first loads, the modal is ok.  I go to a couple pages and the modal is still ok.  Randomly I will get to a page and the page does not finish loading and therefore the AJAX modal pop up call does not work.  It requires either a page refresh or an http request (clicking a link) to another page to stop the loading.  If you wait, the page will NEVER finish loading.  It also does not have anything to do with the data, because it happens on random pages at random times.

                    I can only replicate on IE, which points to an IE bug, but I could not find the bug.  A tool like the Net option of firebug would be nice, but I cannot find one for IE which shows the connections in progress.

                    Environment:

                      OS: XP
                      App Server: jboss-5.1.0.GA
                      Seam: seam-2.2.0.GA
                      DB: Oracle 10G
                      Broswer: IE8


                    Sorry, no code to post because the response is sent back to the browser and completes 90% of the time.

                    Thanks for the replies.
                    • 7. Re: System hangs intermediately
                      clerum

                      sounds like garbage collection...

                      • 8. Re: System hangs intermediately
                        kreynolds.kent.reynolds.tcg.com

                        Solved the issue by changing the values for org.richfaces.LoadStyleStrategy and org.richfaces.LoadScriptStrategy from ALL to DEFAULT in Web.xml.  Seemed to affect only certain versions of IE 7 and 8 on XP.  Never had an issue with firefox.