ODAC 11.2 ReIease 3 and 64 bit Oracle 11g
785415Jan 2 2011 — edited Mar 1 2011Downloaded and installed ODAC 11.2 R3 including its extensions for Visual Studio (2008 in my case).
It won't connect to my Oracle instance and I assume the reason is that my Oracle instance is 64 bit while ODAC 11.2 R3 is 32-bit. I looked for a 64 bit ODAC and this was the best I found:
http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html
And 'xcopy' version without the extensions for Visual Studio.
On the other hand, Microsoft's System.Data.OracleClient does work against my Oracle db (from C#).