Oracle Error Message
RMAN-06420: some files could not be proxy restored – aborting restore
Reason for the Error
Some of the files to be restored could not be restored by the media management software used by the target database. Message 6419 is issued for each file that cannot be restored.
Solution
Contact the media management vendor if you believe that the media management software should support proxy copy of these files. The CROSSCHECK or CHANGE commands can be used to remove these proxy copies from the catalog to prevent the RESTORE command from trying to restore from them.