How to add Oracle skill for the Robot?
If you have a UFT license, open a UFT application as an administrator mode (path - <uft_installation>\uft\bin\UFT.exe). After opening the application it will ask for add-ins, then you can select oracle option.
If you do not have a UFT license, then follow the below procedure,
For recorder, you can add skills in designer-ui under settings -> recorder option.
This method works for other add-ins.