Huge heap dump (11GB) - Jhat failed & Eclipse MAT needed help

Question

We got a memory error in our EA and we used -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/path/to/some/dir to dump the heap at the time of OOM.

We had a

Answer 1

I was using MAT on Linux yesterday.... check out the proper version here

Answer 2

We have had success in the past using Netbeans to analyze OOM errors. It seemed to cope where Eclipse and JHAT couldn't.

Answer 3

forget Jhat, you would need more than 100Gybte of RAM to parse this dump, it would take forever and it would be very hard to find something. I just lately installed MAT on a SUSE 11 machine. worked flawlessly . Can you please make sure that MAT is using the right JVM? Not sure whether we testet it with anything else then the SUN/SAP JVMs.

Regards, Markus (kohlerm)