The following is the ORA-16603 error message, you can learn the cause and solution of the Oracle database error.

ORA-16603 Data Guard broker detected mismatch in configuration ID

Cause: The Data Guard broker on this site has detected a mismatch in configuration Unique ID. This can occur if the original configuration was re-created while this site was disconnected from the network or the same site was added to two different configurations.

Solution: Make sure the site belongs to only one configuration. Remove Data Guard broker configuration files and restart the server.


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