How to fix the Oracle error RMAN-12001: could not open channel string?

In this post, you’ll learn more about the Oracle ErrorRMAN-12001: could not open channel string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

RMAN-12001: could not open channel string

Reason for the Error RMAN-12001: could not open channel string

An ALLOCATE CHANNEL command could not be processed.

How to fix the Error RMAN-12001: could not open channel string ?

You can fix this error in Oracle by following the below steps

This message should be accompanied by other error message(s) indicating the cause of the error.