Oracle Error Message
ORA-55519: Supplemental logging not available for mining SCN range
Reason for the Error
Flashback Transaction cannot work if there are regions in the mining range where supplemental logging is not enabled.
Solution
If you have provided a SCN/time hint which is approximate and far beyond the specified transaction start time, then readjust the SCN hint and try again. If the system has figured out the transaction start time or you are sure of the range, then the specified transaction cannot be backed out.
