Here. From Mihies: The Oracle Data Provider for .NET (ODP.NET) features optimized data access to the Oracle database from a .NET environment. Unlike OLE DB .NET and ODBC .NET, ODP.NET is a native driver and does not use a data access bridge, which can reduce performance. ODP.NET allows developers to take advantage of advanced Oracle database functionality. The data provider can be used from any .NET language, including C# and Visual Basic .NET.