How to clear all configurations on RMAN How can I clear all configurations listed with the command show all on RMAN to default? I just found how to clear one unique configuration for exemple: CONFIGURE CHANNEL DEVICE TYPE DISK clear
Exactly the same way:  CONFIGURE option_name CLEAR;
There is no 'clear all'.

https://docs.oracle.com/database/121/RCMRF/rcmsynta009.htm#RCMRF113