Problems with RelationalDataSample exceptions thrown from VS2005

Question

I am not sure which version of the Oracle.DataAccess .Net assy to use. But both of them throw an exception at run time.
With version 10.2.0.100 I get the following run time error.
This is the file location of this version - C:\XEClient\bin\Oracle.DataAccess.dll
As you can see this is the XE client version.
Error occurred: The type initializer for 'Oracle.DataAccess.Client.OracleConnection' threw an exception.
System.TypeInitializationException was unhandled
Message="The type initializer for 'Oracle.DataAccess.Client.OracleConnection' threw an exception."
Source="Oracle.DataAccess"
TypeName="Oracle.DataAccess.Client.OracleConnection"
StackTrace:
at Oracle.DataAccess.Client.OracleConnection.Dispose(Boolean disposing)
at System.ComponentModel.Component.Finalize()
With version 2.111.6.20 I get the following run time error.
This is the file location of this version - C:\app\john\product\11.1.0\client_1\ODP.NET\bin\2.x\Oracle.DataAccess.dll
As you can see this is the 11g install.
System.BadImageFormatException was unhandled
Message="Could not load file or assembly 'Oracle.DataAccess, Version=2.111.6.20, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. An attempt was made to load a program with an incorrect format."
Source="RelationalDataSample"
FileName="Oracle.DataAccess, Version=2.111.6.20, Culture=neutral, PublicKeyToken=89b483f429c47342"
FusionLog="=== Pre-bind state information ===\r\nLOG: User = PureVirtual-1\\john\r\nLOG: DisplayName = Oracle.DataAccess, Version=2.111.6.20, Culture=neutral, PublicKeyToken=89b483f429c47342\n (Fully-specified)\r\nLOG: Appbase = file:///C:/Users/john/Documents/Visual Studio 2005/Projects/RelationalDataSample/RelationalDataSample/bin/Debug/\r\nLOG: Initial PrivatePath = NULL\r\nCalling assembly : RelationalDataSample, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null.\r\n===\r\nLOG: This bind starts in default load context.\r\nLOG: No application configuration file found.\r\nLOG: Using machine configuration file from C:\\Windows\\Microsoft.NET\\Framework64\\v2.0.50727\\config\\machine.config.\r\nLOG: Post-policy reference: Oracle.DataAccess, Version=2.111.6.20, Culture=neutral, PublicKeyToken=89b483f429c47342\r\nLOG: Attempting download of new URL file:///C:/Users/john/Documents/Visual Studio 2005/Projects/RelationalDataSample/RelationalDataSample/bin/Debug/Oracle.DataAccess.DLL.\r\nERR: Failed to complete setup of assembly (hr = 0x8007000b). Probing terminated.\r\n"
StackTrace:
at RelationalDataSample.ConnectionMgr.getDBConnection(String username, String password, String connectString)
at RelationalDataSample.EmpForm.btnConnect_Click(Object sender, EventArgs e) in C:\Users\john\Documents\Visual Studio 2005\Projects\RelationalDataSample\RelationalDataSample\EmpForm.cs:line 528
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at RelationalDataSample.EmpForm.Main() in C:\Users\john\Documents\Visual Studio 2005\Projects\RelationalDataSample\RelationalDataSample\EmpForm.cs:line 509
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Any help with this is greatly appreciated.
Thank you,
John

Answer 1

Hi John,
Are you still chasing this issue down?
I have found that one of the causes of the "System.BadImageFormatException" exception results from the following set of circumstances:
o 32-bit ODP.NET installed on 64-bit o/s
o .NET application compiled with either "Any CPU" or "x64" set for the "Platform target"
o The application is then deployed to the 64-bit host with the 32-bit ODP.NET installed
o The application executes as a 64-bit application but tries to load the 32-bit ODP.NET, thus the exception
Not sure if this might apply to your situation, but I see "C:\\Windows\\Microsoft.NET\\Framework64" in the text you provided. Since there is not yet a 64-bit release of ODP.NET 11g I wonder if this might be the case.
For what it's worth, I have not experienced any of the problems you've described in your other threads, but I am using 10.2.0.4 on Intel 64-bit with Win 2003...
- Mark