Automating 18c Oracle Database Startup and Shutdown on Oracle Linux 7

#! /bin/sh
# description: Oracle auto start-stop script.
#
# Set ORA_HOME to be equivalent to the $ORACLE_HOME
# from which you wish to execute dbstart and dbshut;
#
# Set ORA_OWNER to the user id of the owner of the
# Oracle database in ORACLE_HOME.

ORA_HOME=<Type your ORACLE_HOME in full path here>
ORA_OWNER=<Type your Oracle account name here>

case "$1" in
'start') 
    # Start the Oracle databases:
    # The following command assumes that the oracle login
    # will not prompt the user for any values
    # Remove "&" if you don't want startup as a background process.
    su - $ORA_OWNER -c "$ORA_HOME/bin/dbstart $ORA_HOME" &
    touch /var/lock/subsys/dbora
    ;;

'stop')
    # Stop the Oracle databases:
    # The following command assumes that the oracle login
    # will not prompt the user for any values
    su - $ORA_OWNER -c "$ORA_HOME/bin/dbshut $ORA_HOME" &
    rm -f /var/lock/subsys/dbora
    ;;
esac