Oracle : Ошибка ORA-26761

"Standby Redo Logs not available for real time mining"
*Cause: Standby Redo Logs required for real time mining by downstream
capture process were not available.
*Action: Check the configuration of Standby Redo Logs and retry the
operation at a later time. To start the capture process without
real time mining property, reset DOWNSTREAM_REAL_TIME_MINE
parameter of the capture process and retry the operation.

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