Provider is not compatible with this version of Oracle client

Question

I am trying to access Oracle(10.2) DB from a .NET 2.0 Console Application.(.exe) in a Win 2008.Web code is also on the same Win 2008 system
The Web application works fine and connects to teh DB , but when I try to run any of the Console applications it gives the error as:
Provider is not compatible with this version of Oracle client.
The Oracle.Dataaccess.dll versions which are available in GAC are 1.102.2.20 and 2.102.2.20.
and the Oracle client installed is 10.2.0.100
The complete error message is:
Unhandled Exception: Oracle.DataAccess.Client.OracleException The provider is not compatible with the version of Oracle client
at Oracle.DataAccess.Client.OracleInit.Initialize()
at Oracle.DataAccess.Client.OracleParameter..ctor(String parameterName, OracleDbType type, ParameterDirection direction)
Can any of you help me find a reason for this error.
Thanks in advance!!

Answer 1

Hi Greg,
I found out another reason this error was appearing.I am compiling the Console application in a 32-bit machine on 32-bit Oracle client.
The pre-compiled DLL and EXE is then exported to a 64-bit Win 2008 machine.
Also,The code has been compiled with ‘Any CPU’ .
The Web Application on the same system is working because the "Enable 32-bit Applications" is set to True.
Are there any DLLs or EXEs created when compiling in the 32-bit machine which is not compatible with the 64-bit machine?
Please help!!
Thanks,
Veena