Cause: Control program usage
message.
Action: None.

Relared Errors:
TNS-01017:
set|show current_listener [<listener_name>]: sets|shows current
listener
TNS-01018:
save_config [<listener_name>]: saves configuration changes to parameter
file
TNS-01019: set
rawmode ON | OFF: set output mode for services and status
commands
TNS-01020:
STATUS of the LISTENER
TNS-01021:
————————
TNS-01022:
Alias string
TNS-01023:
Version string
TNS-01024:
Trace Level string
TNS-01025:
Security string
TNS-01026:
Start Date string