ORA-38863: datafile [string] has been restored from an optimized RMAN backup.
Cause: 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.
Action: Restore the file from a backup prior to the Flashback target SCN or time and then retry the command.
Error Type: ORA