core does not get generated in linux

Hello
This is URGENT!!!
core file is not getting generated for a process(pid: 1234), after running "kill -9 1234" or "kill -11 1234"


machine is:
Linux abc.def.xyz.org 2.6.18-164.2.1.el5xen #1 SMP Mon Sep 21 04:45:50 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

ulimit -a is:
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 32768
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 32768
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited


cat /proc/1234/limits is:
Max cpu time              unlimited            unlimited            seconds
Max file size             unlimited            unlimited            bytes
Max data size             unlimited            unlimited            bytes
Max stack size            10485760             unlimited            bytes
Max core file size        unlimited            unlimited            bytes
Max resident set          unlimited            unlimited            bytes
Max processes             32768                32768                processes
Max open files            1024                 1024                 files
Max locked memory         32768                32768                bytes
Max address space         unlimited            unlimited            bytes
Max file locks            unlimited            unlimited            locks
Max pending signals       32768                32768                signals
Max msgqueue size         819200               819200               bytes
Max nice priority         0                    0


PLease help

Sham
mohet01Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

woolmilkporcCommented:
Hi,

"kill -9" will never force a core dump.

Try "kill -6"  ("ABRT") instead.

If this doesn't work try "kill -3" ("QUIT").

wmp
mohet01Author Commented:
if the sigsegv is generated due to code problem, how to generate core?
Sham
woolmilkporcCommented:
Your program should always generate a core dump when a SEGV occurs, unless its SUID root
(permissions -rws...... and owner root).

In this case special coding is required, see this thread:

http://fixunix.com/unix/398999-forcing-core-dump-sigsegv-setuid-program-linux.html

Or remove the setuid bit and run the program as root, if required (and if you're allowed to do so).

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
mohet01Author Commented:
perfect
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C

From novice to tech pro — start learning today.