Unable to find the requested .Net Framework Data Provider in Oracle

Question

string constr = \"Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=spp01)(PORT=1521))(CONNECT_DATA=(SID=Global)));User

Id=SYSMAN;Password=testman3\";

Answer 1

This is one of the common issues that all .NET developer who ever using the Oracle Client as Database will face.

Points to remember:

• Make sure you have installed Oracle ODAC from Oracle.
• Check if Oracle.DataAccess is properly installed:(Oracle.DataAccess should be there in DbProviderFactories section)
  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config
  • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config
• If oracle 32bit is installed make sure you're building an application in 32x.
• Even if you have 32bit/64bit system and 32bit/64bit application. You should refer the same Oracle.Database DLL version as on DbProviderFactories in machine.config

Screenshot for reference

Quick Links:

• Download Path - http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html
• Similar answer - ODP.NET Managed - Unable to find requested .Net Framework Data Provider