What exactly do you mean by “The system did not support”. Are you getting an error ? what is the exact error message ?
What version of the .NET framework have you installed ?
You might need to <a href=”http://www.microsoft.com/downloads/details.aspx?FamilyID=4f55d429-17dc-45ea-bfb3-076d1c052524&DisplayLang=en”>download the Managed Provider for Oracle</a>
Or you might just need to add a reference to the dll for the System.Data.OracleClient namespace in your project.
Have a look at this page: