core files getting created how to stop it?

i wanted to know, how can i disable it or stop getting created the core files in my application path.whenever i restart my application core.* files are getting created without causing any problem to my application.

i tried of changing the /etc/security/limits.config > * hard core 0 soft core 0

other i tried as sudo nano /etc/profileulimit -c 0source /etc/profile

we are using python and processor manager for application.

but still core files are getting created.