I have exactly the same problem. When a type a query in the SQL query builder (TableAdapter query configuration wizard) that uses parameters and execute it I get an "parameter is incorrect" error. Is there any fix for it?
I'm using VS 2010, Windows 7 Professional 64-bit and ODAC 11.2 Release 3 (184.108.40.206.1) with Oracle Developer Tools for Visual Studio.
I have the same issue and i use the ODAC by provider in namespace System.Data.Common. It drives me crazy by problems caused by this behavior. The DbCommand don't have this property by default and not exist configuration to change the behavior of OracleCommand for use in .config files. I Think that the best behavior to OracleCommand works fine is in next release the property bindbyname is set "true". It grants that the default behavior is equal of the other providers.