问题
I am getting an error message in a .NET application. I am very new to using Oracle with .NET.
The ADO.NET provider with invariant name 'Oracle.DataAccess.Client' is either not registered in the machine or application config file, or could not be loaded.
I have installed devart's oracle driver and also oracle instant client from oracle. But getting this error message. Does anyone know how to solve this?
来源：https://stackoverflow.com/questions/29916234/ado-net-oracle-error