OutOfMemory Exception in AdminServer

Hello,
we have several times OutOfMemory Exceptions in AdminServer. What are the recommend USER_MEM_ARGS to use aia? Currently we use the following configuration in setDomainEnv.sh:
-Xms2048m -Xmx2048m -XX:PermSize=512m -XX:MaxPermSize=512m -XX:AppendRatio=3 -XX:NewSize=1228m -XX:MaxNewSize=1228m -XX:SurvivorRatio=10
Greetings from Germany
Marcel

Hello,
we try different USER_MEM_ARGS and use this one:
USER_MEM_ARGS="-Xms512m -Xmx1536m -Xss256k -XX:+UseParallelGC -XX:GCHeapFreeLimit=20 -XX:PermSize=128m -XX:MaxPermSize=512m -XX:NewSize=128m -XX:MaxNewSize=256m -XX:SurvivorRatio=5"
Till now we have no more out of memory exception.
Greetings
Marcel

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    Our application gives OutofMemory exception randomly. The server we are using has enough memory. Can anyone suggest an approach to debug this issue. Our server has lots of memory. Our memory Java parameters are set to default
    Ammar

    The amount of physical memory you have on your server has no bearing on OutOfMemoryErrors; this is solely affected by the memory parameters you pass into the Java VM. Try increasing the upper memory limit.
    I wrote an article a while back about tracing memory leaks. You can use the technique described in this article to see why your application is using so much memory:
    http://www.oracle.com/technology/products/jdev/tips/duff/debugger_memoryleaks3.html
    Thanks,
    Brian

  • OutOfMemory Exceptions on Servlets, Try-Catch unable to help

    Hi, I'm playing with Java servlets right now and I seem to be getting some OutOfMemory errors. The weird thing is that even though I had identify the souce of error and tried to enclose it with a try-catch, the exception still occurs. Why is that so?

    OutOfMemoryError is actually a java.lang.Error, not a RuntimeException. So if you use a try/catch like this
    try {
      // stuff
    } catch (Exception e) {..}Errors will fall through, since Error is not a subtype of Exception. (Check the API.)
    You can catch it by catching Error or Throwable, like this:
    try {
      // stuff
    } catch (Error e) { //  this is rarely a good idea
    }But you normally wouldn't want to do this. When there's no memory left, there's not a whole lot you can do about it, and most of the code you might want to put inside the catch block will merely throw another OutOfMemoryError.
    As voronetskyy said, you're either creating too many (or too large) objects (typically in an endless loop), or you have specified too little memory for your application.

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