RMAN-06551

Error: RMAN-06551: error while looking up datafilecopy for file number: string

Causa: An error occurred while looking up the specified datafilecopy in the recovery catalog or target database controlfile.

Acción: This error is accompanied by other errors describing the reason for the failure. If the datafilecopy was created during a RESTORE with a new name, then ensure that the RESTORE completed successfully.