Resolution:
The recommended way to shutdown the EMS server is by issuing a shutdown command through the EMS Admin tool.

However, the EMS server also gracefully shuts down *only* if it receives one of the following signals:

a)  SIGINT (Signum 2)
Sent through kill -2 &ltpid> or by ‘&ltctrl> c’

b) SIGTERM (Signum 15)
Sent through “kill &ltpid>” or by “kill -15 &ltpid>”

EMS Server may *not* gracefully shutdown through any other method e.g. kill -9 &ltpid>