I've known DB Connect 2 does not work with a Splunk Free License.
But in DB Connect 3 it's like Splunk Free is not included in the prerequisites. And:
This version of Splunk DB Connect is compatible with Splunk Platform versions 6.6.0 and later.
With which functions can I use with a splunk free license if my enterprise trail license expires?
Configuration -> Connection
and Data Lab -> Input & Output?
You can turn your Splunk Instance to Forwarder License and use DB Connect 3.2.0
Here is the similar question.
So I cannot use configuration while I can input and output data?