Oracle Error Message
ORA-16525: the Data Guard broker is not yet available
Reason for the Error
The Data Guard broker process was either not yet started, was initializing, or failed to start.
Solution
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.