In this post, you’ll learn more about the Oracle ErrorRMAN-06188: cannot use command when connected to a mounted target database with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
RMAN-06188: cannot use command when connected to a mounted target database
Reason for the Error RMAN-06188: cannot use command when connected to a mounted target database
An attempt was made to issue a command that can be used only when there is no connection to the target database or when the target database is not mounted.
How to fix the Error RMAN-06188: cannot use command when connected to a mounted target database ?
You can fix this error in Oracle by following the below steps
Dismount the database or restart RMAN and use the command before connecting to the target database.