Download ODT for VS 2019, extract and run the VSIX file to install Oracle Developer Tools for Visual Studio 2019 (ODT). ODT is a toolset that is tightly integrated with Visual Studio and enables Visual Studio data features such as Server Explorer integration, TableAdapter Configuration Wizard and Entity Designer and also includes many useful Oracle specific tools including an Oracle Cloud explorer allowing you to easily connect to and manage your Autonomous Database from Visual Studio. To learn more about Oracle Developer Tools for Visual Studio, please visit the ODT Homepage.
For ADO.NET data access from inside your code, get managed ODP.NET and ODP.NET Core from Nuget. For alternate ODP.NET downloads, including unmanaged ODP.NET, visit the download page and view the For Experienced Developers, or Runtimes sections.
Installing ODT Help:
Run the Visual Studio installer and install Help Viewer. In the Visual Studio menu, under Help menu, set Help Preference to "Launch in Help Viewer". Download and install the ODT Visual Studio Help at the link above. Once installed, press F1 from ODT dialogs to view context sensitive help.