| ERROR | 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. |