Should you decide to perform an “On Premise” installation and deployment, you will have to handle the connection architecture with your Database(s).
Shelly provides you a detailed menu to handle and set options.

1. Open Flow builder

2. Go to Project/Properties

3. Select the Database you want to connect to

4. Click on Build

5. Then Click again on Built

6. Click on Provider

Shelly 2020 will list all installed standard connectors. You can select the one that matches your Database provider.
For your specific Project we recommend: ORACLE Provider for OLE DB.