Oracle : Ошибка ORA-38738

"Flashback log file is not current copy."
*Cause: A check of flashback database log file header at database
open found that the flashback database log appeared to be
an incorrectly restored backup. Flashback database log
files cannot be backed up and restored.
*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.

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