In this post, you’ll learn more about the Oracle ErrorORA-19660: some files in the backup set could not be verified with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-19660: some files in the backup set could not be verified
Reason for the Error ORA-19660: some files in the backup set could not be verified
A restore conversation was made to verify all the files in a backup set, and the files which were printed in messages 19661 or 19662 could not be verified because corrupt blocks for those files were found in the backup set.
How to fix the Error ORA-19660: some files in the backup set could not be verified ?
You can fix this error in Oracle by following the below steps
Unless the damage to the backup set can be repaired, the indicated files cannot be restored from this backup set.