"cannot exceed the maximum number of databases in this configuration"
*Cause: The Data Guard broker configuration already contained the maximum
number of databases that could be configured and managed by the
*Action: Select and remove an existing database from the broker
configuration, then reissue the command to add another database
to the configuration. Note that when COMPATIBLE is set lower
than 18.104.22.168.0, the broker can configure and manage up to 10
databases. When COMPATIBLE is set to 22.214.171.124.0 or higher, this
limit is increased to 31.