ORA-38742: Flashback log file has incorrect log reset status.
Cause: The flashback database log file header had log reset data that was different than the control file. The log was probably an incorrectly restored backup. Flashback database logs cannot be backed up.
Action: If you are doing a FLASHBACK DATABASE, then the flashback cannot be performed because of the corrupted log. A restore and an incomplete recovery must be performed instead.