Oracle Solution for Error ora-16757

ORA-16757: unable to get this property's value

What triggered the Error:

The Data Guard broker failed to get the value for the specified property, possibly because the specified property's value is not available for the current database role.

What should we do to fix it:

If the specified property's value is not available for the database's current role, please specify this property for a database for which it is available. Otherwise, check the Data Guard broker log for more details.