In this post, you’ll learn more about the Oracle ErrorORA-10481: Backup data block for data file has an unlogged change with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-10481: Backup data block for data file has an unlogged change
Reason for the Error ORA-10481: Backup data block for data file has an unlogged change
Flashback was enabled for the data file when the backup data block used for block media recovery had an unlogged change.
How to fix the Error ORA-10481: Backup data block for data file has an unlogged change ?
You can fix this error in Oracle by following the below steps
Remove the data file from the flashback set or use a backup block that does not contain an unlogged change to perform block media recovery.