How to fix the Oracle error ORA-38863: datafile string has been restored from an optimized RMAN backup.?

In this post, you’ll learn more about the Oracle ErrorORA-38863: datafile string has been restored from an optimized RMAN backup. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-38863: datafile string has been restored from an optimized RMAN backup.

Reason for the Error ORA-38863: datafile string has been restored from an optimized RMAN backup.

Flashback Database could not flash back the file because it was restored from an RMAN optimized backup with deallocated objects. Flashback cannot revert the file to a time before the last deallocation in the datafile backup.

How to fix the Error ORA-38863: datafile string has been restored from an optimized RMAN backup. ?

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

Restore the file from a backup prior to the Flashback target SCN or time and then retry the command.