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Java Forum / Virtual Machine / April 2005

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java.lang.OutOfMemoryError - server going down

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Simon - 22 Apr 2005 21:39 GMT
Hi,

I've got a web application, which is using the Orion 2.02 application
server.  We've added another system to the suite of systems we already
have in the last 3 months.

Since then, we're having problems with the server and it keeps going
down and on the log file we're getting a load of exceptions and below
is the error message we got.

We've already moved the system to a more powerful server.  We've gone
through everything and we have no definite answers.  Is it hardware??
code(i.e.code leak)???

Of course I know its running out of memory, but what else is causing
it or has anyone experienced similar problems.

Can anyone help and explain what is going wrong???

[http-server] Exception calling scheduled listener:
java.lang.NullPointerException
<c18;client18>: caught exception [java.lang.OutOfMemoryError] null
<c27;client27>: caught exception [java.lang.OutOfMemoryError] null
<c30;client30>: caught exception [java.lang.OutOfMemoryError] null
<c7;client7>: caught exception [java.lang.OutOfMemoryError] null
<c1;client1>: caught exception [java.lang.OutOfMemoryError] null
<c43;client43>: caught exception [java.lang.OutOfMemoryError] null
[http-server] Exception calling scheduled listener:
java.lang.NullPointerException
<c10;client10>: caught exception [java.lang.OutOfMemoryError] null

Regards
Simon
Thorbjørn Ravn Andersen - 26 Apr 2005 16:37 GMT
> Can anyone help and explain what is going wrong???

You may simply have too  much active code for the application server -
try increasing the heap on the JVM running Origon.

If the problem persists you may hold on objects that should have been
released - try a quality profiler to figure out where the leak is.  I
have been recommended JOptimizeIt from Borland, which is available in a
trial version.  It requires careful configuration to work properly.

Good luck.

Thorbjørn


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