[Unit] Description=Oracle Net Listener After=network.target [Service] Type=forking EnvironmentFile=/etc/sysconfig/db01.oracledb ExecStart=/u01/app/oracle/product/12.2.0/dbhome_1/bin/lsnrctl start ExecStop=/u01/app/oracle/product/12.2.0/dbhome_1/bin/lsnrctl stop User=oracle [Install] WantedBy=multi-user.target