@chris_ahn ,

In general, core dumping is not enabled on most UNIX/Linux clients which makes it difficult to troubleshoot when an application process crashes. You can temporarily enable core dumps for a user session by running the ulimit command so that whenever an application process crashes, it dumps the core. Since this is a temporary setting, if another user logs on and restarts the application, or if the client reboots, or if updates are installed on the client, the core setting is lost. 

Can you check if the below key has been added to enable core dump:

https://documentation.commvault.com/11.24/expert/24174_frequently_asked_questions_linux_file_system_01.html#how-do-i-enable-core-dump-on-unixlinux-clients-in-event-of-application-process-crash

Best Regards,

Sebastien

i want to CORE file not make

true or false ?

To stop creating it, you need to set to false.

However that means a process is crashing, and you need to fix this really.

Do you see the name of the process in /var/log/messages please?

I would recommend you log a case with Commvault so we can check.

Best Regards,

Sebastien