ORA-16637: an instance failed to access the Data Guard broker configuration

Cause: When an instance was started, the DMON process on the instance failed to access the Data Guard broker configuration. This can happen if the DG_BROKER_CONFIG_FILE1 and DG_BROKER_CONFIG_FILE2 initialization parameters are not set up correctly to point to the broker configuration files shared among all instances.

Action: Set DG_BROKER_CONFIG_FILE1 and DG_BROKER_CONFIG_FILE2 to the correct file specifications that point to the broker configuration files shared among all instances. Bounce the DMON process by setting DG_BROKER_START initialization parameter to FALSE and then to TRUE.

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