Oracle Listener (LSNRCTL)

>> Display Oracle Listener Status

$ lsnrctl status
>> Start Oracle Listener
$ lsnrctl start

>> Stop Oracle Listener
$ lsnrctl stop

>> Restart Oracle Listener
$ lsnrctl reload

>> Available Listener Commands 
$ lsnrctl help

• start - Start the Oracle listener
• stop - Stop the Oracle listener
• status - Display the current status of the Oracle listener
• services - Retrieve the listener services information
• version - Display the oracle listener version information
• reload - This will reload the oracle listener SID and parameter files. This is equivalent to lsnrctl stop and lsnrctl start.
• save_config – This will save the current settings to the listener.ora file and also take a backup of the listener.ora file before overwriting it. If there are no changes, it will display the message “No changes to save for LISTENER”
• trace - Enable the tracing at the listener level. The available options are ‘trace OFF’, ‘trace USER’, ‘trace ADMIN’ or ‘trace SUPPORT’
• spawn - Spawns a new with the program with the spawn_alias mentioned in the listener.ora file
• change_password – Set the new password to the oracle listener (or) change the existing listener password.
• show - Display log files and other relevant listener information.

>> Help menu for specific listener command
$ lsnrctl help show