Oracle : Ошибка ORA-16525

"the Data Guard broker is not yet available"
*Cause: The Data Guard broker process was either not yet started, was
initializing, or failed to start.
*Action: If the broker has not been started, set the DG_BROKER_START
initialization parameter to true and allow the broker to finish
initializing before making the request. If the broker failed to
start, check the Data Guard log for possible errors. Otherwise,
retry the operation.

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