Can not connect oracle - 'Test adapter connection failed!'

hello, could you tell me where download adatper file and the file’s name?
the green arrow 's link address show a lot of resources.
I need connect to oracle, driver is oracle(.net framework data provider)

The adapter file actually is the Oracle JDBC file, which you can download it from Oracle’s website. Feel free to contact me if you need any help.

Best regards,
Rain