The Oracle listener is set up to start automatically whenever your server machine is restarted. However, when your system encounters unforeseen circumstances, or when you have manually stopped the listener, you can restart it at the command line. To do so, use the following:
lsnrctl start
You can use Enterprise Manager to stop the listener. To do so, navigate to the Listener: listener_name page by clicking Listener on the Home page. To shut down the listener, click Stop. You can also stop it at the command line using the following:
lsnrctl stop
Alternatively, you may login using the authorized OS user (orasid – example for SAP application). Execute the lsnrctl command,
> lsnrctl LSNRCTL for IBM/AIX ITSITI System/1234: Version 11.2.0.4.0 Copyright (c) 1991, 2013, Oracle. All rights reserved. Welcome to LSNRCTL, type "help" for information. LSNRCTL> help The following operations are available An asterisk (*) denotes a modifier or extended command: start stop status services version reload save_config trace spawn change_password quit exit set* show*
Type in the stop/start command to bring down/up the listener. Use status command to check the availability.
