Oracle.DataAccess.dll only 32 bits

Hello,
I have Oracle Client 11.2.0 32bit and 64bit installed side-by-side. When I run CORFLAGS.EXE on the Oracle.DataAccess.dll that's in the 32 bit ODP NET's Bin folder and then run it on the dll that's in the 64 bit's Bin folder, these are the results:
Oracle.DataAccess.dll (from 32Bit folder)
Microsoft (R) .NET Framework CorFlags Conversion Tool. Version 4.0.30319.1
Copyright (c) Microsoft Corporation. All rights reserved.
Version   : v4.0.30319
CLR Header: 2.5
PE        : PE32
CorFlags : 24
ILONLY    : 0
32BIT     : 0
Signed    : 1
Oracle.DataAccess.dll (from 64Bit folder)
Microsoft (R) .NET Framework CorFlags Conversion Tool. Version 4.0.30319.1
Copyright (c) Microsoft Corporation. All rights reserved.
Version   : v4.0.30319
CLR Header: 2.5
PE        : PE32
CorFlags : 24
ILONLY    : 0
32BIT     : 0
Signed    : 1
Are these 2 files "AnyCPU" which in .NET would make them 32 bit binaries? Is there a 64 bit version of this DLL?
Thanks in advance,
Richard

Sorry, I correct myself... the dlls are correct. I have a batch file that runs corflags on about 15 dlls from a project that's giving me a BadFormatImage exception, and I had made a mistake in the batch file. That'd made me believe there was something wrong with my OClient. The corflags results now show correctly:
Oracle.DataAccess.dll 32 bit
CLR Header: 2.5
PE        : PE32
CorFlags : 11
ILONLY    : 1
32BIT     : 1
Signed    : 1
Oracle.DataAccess.dll   64 bit
CLR Header: 2.5
PE        : PE32+
CorFlags : 9
ILONLY    : 1
32BIT     : 0
Signed    : 1
Thank you Alex

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What do you have /32BIT flag set to in the assembly? Ie, was it compiled with AnyCPU, x86, etc? You can use corflags.exe with the .net sdk to find out.
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===
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How reference 64-bit Oracle.DataAccess.dll in VS2010?

Hello!
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Regards,
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Please move this thread to a relevant forum. Best bet is {forum:id=146}. (Even better probably is some MS forum for VS 2010, as it seems VS specific.)

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Hello,
Is it safe to use CORFLAGS.EXE to change the bit-architecture of the Oracle.DataAccess.dll (the version included in Oracle Client 11gR2) to AnyCPU by clearing up the 32bit flag?
This dll (in the Oracle Client 32 bit installation) originally has the 32bit flag set to 1 like this:
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Thank you very much.
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Oracle.DataAccess.dll 2.112.1.0 vs 2.111.7.0

Hi,
I built a windows 7 64 bit dll application with Oracle 11g, my Oracle.DataAccess.dll version is 2.112.1.0. when I create setup package, I exclude Oracle.DataAccess.dll. When I install it on my user's machine, which have 2.111.7.0 version of Oracle.DataAccess.dll. Now it stop working.
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b) uninstall my 2.112.1.0 version of Oracle client, install 2.111.7.0 one
c) other... ?
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Thank you,
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wesbird wrote:
When I install it on my user's machine, which have 2.111.7.0 version of Oracle.DataAccess.dll. Now it stop working.
a) install 2.112.1.0 version of Oracle.DataAccess.dll in my setup package and install it on user's machineJust wanted to point out that if "2.111.7.0" means the user's machine has Oracle 11.1.0.7 something installed, then simply including a "2.112.1.0" dll is not enough i.e. whole 11.2 Client install is needed. Having multiple Oracle homes on a Windows pc might not work well for some apps (think dependencies/support requirements for 3rd part Oracle apps).
Perhaps ODAC Xcopy deployment package could help simplify deployment.
32-bit ODAC Xcopy version
http://www.oracle.com/technetwork/database/windows/downloads/utilsoft-087491.html
64-bit equivalent
http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html
Edited by: orafad on Aug 24, 2011 1:10 AM

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wesbird wrote:
When I install it on my user's machine, which have 2.111.7.0 version of Oracle.DataAccess.dll. Now it stop working.
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Edited by: orafad on Aug 24, 2011 1:10 AM

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It took me a while to spot the problem. I'm using Entity Framework 5 and hit a machine with Release 4. It threw an completely misleading exception on load.
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In your post https://forums.oracle.com/message/11264632#11264632 you describe best practice.
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If we are to follow your recommend best practice then we must have different AssemblyVersions with each release. Otherwise, we could load the wrong ODP.NET Oracle.DataAccess.dll from the GAC that doesn't match the unmanaged Oracle Client dlls we specified with the DllPath setting.
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Problem using oracle.dataaccess.dll

Hi,
I have an web application which uses Oracle.DataAccess.dll to communicate with and Oracle db. The web application deployed on 32 bit windows system works but not on windows server 2008 64 bit. I installed 10204_vista_win2k8_x64_production_db package, referenced the installed dll (version 2.102.4.0) from the project but I get the following error:
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I had this problem too.
I have not found any way to get ODP to work on a 64 bit machine. I have gone through more than 30 permutations of install combinations and all have their problems.
Your's is one I remember.
The error message does not give a good description of the problem. It CAN find it, but it can't load it.
The main problem in my opinion is that Visual Studio is a 32 bit app and so are its tools. MS will say that is no big deal because they don't want to rewrite native code sooner than they have too. It is going to stay that way for 2010. Visual Studio is going to load a .dll to connect to Oracle in server explorer and in any datasets you have created with the designer...its going to use a 32 bit .dll now your application wants a 64bit .dll... see the problem? I beleive that when you install the ODP registry settings are made for viual studios sake, but I don't know what happens under the hood.
Does visual studio give you any option at all to choose what assemblies to use for the IDE tools? nope
I have tried 32 bit client, 64 bit client, ODACwithODP and every combination of them in every version oracle offers on their download site. Nothing worked 100%.
I got
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You can also combine the problem of Oracle provider along with the fact that 1/2 of Visual Studio's tools don't care about 64 bit programming. For example, I made a wcf service that as going to access my database. Well, guess what you can't use Visual Studio's WCF debugger because WcfSvcost.exe is 32 bit. Will it give you an informative error message? nope. Just a BadImageFormat Exception with no clue which file is causing the problem. spent a week of precious time on that one and thought it was an oracle provider issue.
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Oracle.DataAccess.dll Error upon Deployment

Hi,
I have an application which has an optional Database Source setting (SQL | Oracle). The Oracle Database is used only when the application is set to run on Oracle Mode. My problem is when I deploy the application it seems that I need to install Oracle ODP.net even if I desired to run on SQL mode. I tried some work around, I copied Oracle.DataAccess.dll (without installing ODP.net) to the BIN folder of my application and deleting the Oracle reference at the assemeblies in the WebConfig. On the first run I get an error about oracle versions.. but when i refresh the page this error is gone.
Please advise me on what shall be done in this case. I want the on first load the error will be gone.
Thanks

The Oracle.DataAccess.dll is variously located at
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Version 10.2 it's at C:\oracle\product\10.2.0\client_1\ODP.NET\bin\2.x for the .net 2.0 version.
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