I agree. I've had the displeasure of experiencing a Tomcat JVM core dump on me not too long ago (in a multi-user development environment, fortunately) on a Sparc/Solaris box. It turned out to be due to insufficient swap memory in the system. I didn't see any OutOfMemoryExceptions raised prior to the crash, so it wasn't that obvious, but the top command came to the rescue in the end.Yeah, I've encountered internal crashes, as I imagine many others on the list have. In my case it was due to missing Solaris OS patches. The hs_err produced by the JVM when it has an internal crash sometimes says things like "could not allocate font package xxx" which is a hint to a badly installed JDK.
Other people on Linux have had internal crashes with the wrong thread
library configured, or the wrong kernel version. You can search the
archives for all this information. It's more an art than a science to
debug these, and that can be frustrating.
-- Ankur
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