If I use this string it returns me: System.ArgumentException: 'server' is not a connection attribute valid. What should I use instead?

That should be all that's necessary, perhaps restarting the server where ODAC is installed might help?

Downloaded and installed Oracle Extenstion 4.1.1 without any errors. Sincere thanks! I will begin to setup an Oracle db deploy and test the results. Thanks again, Dan.

I was able to resolve this issue using this format: DATA Source=<value from tnsnames.ora>;USER ID=<myusername>;PASSWORD=<mypassword>; I restarted my system to restart Oracle. Then Test Connection was successful after that.

This has been updated; Oracle Extension 3.1 now supports multiple commands per script. You can update this from within BuildMaster