How do you debug jvm core dump?

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nibblix@gmail.com - 18 Nov 2005 19:23 GMT

Hi,
Can someone point me to some information on how to debug a jvm core
dump? The program writes out a log file hs_err*.log and apparently dies
although I still some zombie threads holding on to the memory etc.

The log file says "unexpected signal : 11 at PC....."

thanks,
n

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Gordon Beaton - 19 Nov 2005 08:22 GMT

> The log file says "unexpected signal : 11 at PC....."

Do you have any native code in your application?

/gordon

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nibblix@gmail.com - 21 Nov 2005 18:32 GMT

As a matter of fact I do. Is this a JNI error? How can you tell?

thanks,
n

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Gordon Beaton - 22 Nov 2005 06:31 GMT

> As a matter of fact I do. Is this a JNI error? How can you tell?

Segmentation fault (signal 11) can only be caused by native code, i.e.
the JVM itself or one of its native libraries, or your own native
code. My money's on the latter.

/gordon

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