How to fix the Oracle error RMAN-20002: target database already registered in recovery catalog?

In this post, you’ll learn more about the Oracle ErrorRMAN-20002: target database already registered in recovery catalog with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

RMAN-20002: target database already registered in recovery catalog

Reason for the Error RMAN-20002: target database already registered in recovery catalog

target database is already registered in the recovery catalog

How to fix the Error RMAN-20002: target database already registered in recovery catalog ?

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

if the target database is really registered, there is no need to register it again. Note that the recovery catalog enforces that all databases have a unique DBID. If the new database was created by copying files from an existing database, it will have the same DBID as the original database and cannot be registered in the same recovery catalog.