1 Reply Latest reply on Mar 9, 2012 2:20 AM by Wolf-Dieter Fink


    bhadre Gowda Newbie

      Hi All,


      We are facing frequent OOM issue in Production SOA server instances.


      we have configured the JVM arug like below Is this the correct configuration or else any thing we need to add avoid frequent OOM error.


      /usr/java/latest/bin/java -Dprogram.name=run.sh -server -Xms4096m -Xmx4096m -XX:PermSize=256m -XX:MaxPermSize=512m


      Below restarting the server i have taken the Heap history.

      Heap Configuration:

         MinHeapFreeRatio = 40

         MaxHeapFreeRatio = 70

         MaxHeapSize      = 4294967296 (4096.0MB)

         NewSize          = 1310720 (1.25MB)

         MaxNewSize       = 17592186044415 MB

         OldSize          = 5439488 (5.1875MB)

         NewRatio         = 2

         SurvivorRatio    = 8

         PermSize         = 268435456 (256.0MB)

         MaxPermSize      = 536870912 (512.0MB)


      Heap Usage:

      PS Young Generation

      Eden Space:

         capacity = 1139474432 (1086.6875MB)

         used     = 1134005864 (1081.472267150879MB)

         free     = 5468568 (5.215232849121094MB)

         99.52007979763077% used

      From Space:

         capacity = 38797312 (37.0MB)

         used     = 0 (0.0MB)

         free     = 38797312 (37.0MB)

         0.0% used

      To Space:

         capacity = 159252480 (151.875MB)

         used     = 0 (0.0MB)

         free     = 159252480 (151.875MB)

         0.0% used

      PS Old Generation

         capacity = 2863333376 (2730.6875MB)

         used     = 2863333296 (2730.6874237060547MB)

         free     = 80 (7.62939453125E-5MB)

         99.99999720605359% used

      PS Perm Generation

         capacity = 268697600 (256.25MB)

         used     = 197767376 (188.6056671142578MB)

         free     = 70930224 (67.64433288574219MB)

         73.60221155678353% used


      I suspect some generation ration configuration is worng, Could you please correct me if am wrong.



      Bhadre Gowda

        • 1. Re: Getting frequently OUT OF MEMORY ERROR ON  JBOSS SOA SERVER
          Wolf-Dieter Fink Master

          Nobody can't give you the ultimate answer how to set the Heap and GC.

          It depends extremely to your application, so it is your housework.


          The first thing is to check whether you have an application memory leak. This can be done by monitoring the JVM.

          If you see that the OldGen utilization is growing during the time (and the throughput is not increasing as well) you might use a profiler (testenv) or heapdumps and compare it.


          From what you post it looks like a leak.