and what does OraOLEDB.Oracle do ?
This one should be included with the Oracle client.
P.s. If you had "Enable 32 Bit Applications" on, I would switch it off again to be sure you are using 64-bit IIS threads. Unless you have 32-bit dll dependencies off course, but then you'll need the 32-bit Oracle client.
Last edited by disel2010; July 28th, 2011 at 10:08 AM..