BadImageFormatException. This will occur when running in 64 bit mode with the 32 bit Oracle client components installed

Question

I am getting this error while on of my .Net application are trying to make a connection to oracle database.

The error says that This problem will

Answer 1

Make sure that registry HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\ODP.NET\4.112.# DIIPath key is pointing to 32 bit Oarcle client BIN directory. For example, DIIPath value can be C:\app\User_name\11.2.0\client_32bit\bin