core from a running process

[FRamsay at castelhq.com]

Does anyone know of a way to get a core from a running process without
crashing the process?  I have a process
that occasionally stops responding but doesn't actually crash.  Worse this
only happens at one client site and
I can't reproduce it in the office, so I can't attach dbg to it.  To
complicate matters the application spawns several
other processes so I don't know which one is causing the problem :(     So
does anyone know a very simple way I
can get core file, and it has to be _very_ simple because I have to talk
the client through it over the phone.

                         -fjr


Frank Ramsay
Systems Programmer
Castel, Inc
14 Summer St, 3rd Floor
Malden, MA 02148
(781) 324-0140 (voice)
(781) 324-0277 (fax)
Emal: framsay at castel.com