You delete the parameter specified as <parameter_name> from the database parameter file.
The changed values are transferred to the parameter file and are effective after the next restart of the database instance.
Use this command with great care.
The param_directdel command accesses the database instance parameter file directly. It does not require a parameter session and so it is not possible to ROLLBACK.
You have the server authorization ParamFull.
param_directdel <parameter_name>
The system displays an OK message.
In the event of errors, see Reply Format.