Core Dumps Solaris

flyz

Any Idea on how I can anlyze a core dump on Solaris?

It's a java app that's crashing and I need to know why

davej

mdb is the standard debugger that comes with solaris. Look at man mdb. However remember that core files often only tell you the effect of what happened - not the root cause.

Edit: also take a look here:

http://docs.sun.com/db/doc/806-5194

davej

lynchie

Originally posted by flyz
Any Idea on how I can anlyze a core dump on Solaris?

It's a java app that's crashing and I need to know why

Whats actually core dumping, the Java runtime environment i.e. the java/jre binary or some other binary?

If its the java binary, have you checked the logs of the application? Have you applied all of Sun's recommended patches for running java on solaris 7 & 8?

flyz

Originally posted by lynchie
Whats actually core dumping, the Java runtime environment i.e. the java/jre binary or some other binary?

If its the java binary, have you checked the logs of the application? Have you applied all of Sun's recommended patches for running java on solaris 7 & 8?

it's the java binary thats crashing.
however I've figured out that it's the version of jdk that I'm running is the problem.

Trojan

This isn't so relevant to your prob I guess, but might be handy for others reading this thread.

Couple of things you can check out:

--

"file core": should give some info, e.g. if you don't know what app it came from:
core: ELF 32-bit MSB core file SPARC
Version 1, from 'bug-del2'

--

"adb core"
core file = core - program
"bug-del2" on platform SUNW,Ultra-60
SIGSEGV: Segmentation Fault

(You can quit adb using ctrl-D).

--

Very useful and relatively easy to use, is dbx. You need to call dbx in the format:

"dbx /path/to/app /path/to/core"

From the dbx prompt you can then do a "where" command which will give you a stack trace. Very useful.

Good luck,
Al.






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