How to Turn ON Logging at Oracle Listner

Turn on logging for all listeners in order to capture Listener commands and brute force password attacks.

LSNRCTL> set current_listener

LSNRCTL> set password Password: listener>

LSNRCTL> set log_directory /network/admin

LSNRCTL> set log_file .log

LSNRCTL> set log_status on

LSNRCTL> save_config

This will help in identifying the Listener Commands and if there is any Brute force attack to the system.