Jboss 6.0.0.Final - JVM crash

[freestila]

Hi,

unfortunately the following question is a pretty "general one" and we (currently) do not have specific details. Sorry in advance.

We are using JBoss 6.0.0.Final on a Windows Server.

Within the last days the JBoss server process has crashed several times.

Not even a java core file is written. The only thing which is available is a mdmp file which

seems not to be a big help.

Since our application is dealing with lots of memory, we suspect it to be some kind of memory problem.

No, there is no OutOfMemoryException within the log files .... ;-)

Within the log files there is absolutely no clue on the kind of crash. The last entry is a "normal" System.out written

by our application.

And no, there is no (obvious) relationship between the kind of work the application is currently dealing with and the crash.

Has anyone encountered similar 'mysterious' crashs of the JVM?

Has anyone any idea on how to narrow down the problem.

Thanks in advance for any help.

Best regards

Helge

Some (basic) information:

Hardware: 20GB RAM

    Intel Xeon(R) CPU X5650 @ 2.67GHz (4 processors)

OS: Windows Server 2008 R2 Standard with Service Pack 1

Java: 1.7.0_01-b08, 64-bit Server VW 21.1-b02

JBoss: 6.0.0.Final "Neo"

Memory: -Xms1024m -Xmx7120m -XX:MaxPermSize=1024m

[wdfink]

Sometimes there are GC problems without any OOMEx, you might enable gc logging. Also the GC might have issues and produce such failures.

You might change the GC.

Also You might give Java6 a try with the latest version

[erasmomarciano]

The your webapp uses a lot theard?

I think you should do an Tunig on JVM

Why you use this parameter?

Memory: -Xms1024m -Xmx7120m -XX:MaxPermSize=1024m