Attempt to load Oracle client libraries threw BadImageFormatException. This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed.

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I am getting this error in this line:

conn.open();

as Attempt to load Oracle client libraries threw BadImageFormatException. This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed.

I am using windows 8 pro 64 bit with oracle 12c 64 bits and visual studio 2010 professional

....none of the solutions I found are working for me...
I cannot find the application pool in IIS and new solution platform from build->configuration manager cannot be created...Active solution platform is in 'Any CPU'..no other options available in dropdown and no new options can be created...

How can I solve this?

Thanks....

Posted 28-Mar-14 4:14am

planetz

Updated 28-Mar-14 4:33am

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Dave Kreskowiak · Answer 1 · 2014-03-28T04:43:00

Solution 1

Two possibilities:

1) Your code is being compiled to Target x86 only (32-bit) and you're using the 64-bit Oracle client.

2) Your code is being compiled to Target AnyCPU (on a 64-bit machine) or x64 only (64-bit) and you're using the 32-bit Oracle client.

Go into your project Properties, click the Build tab and look at the Platform Target box. If it's Any CPU, change it to x64 IF AND ONLY IF you can verify that you ARE using the 64-bit Oracle client. If it still doesn't work, go back here and change this option to x86.

Posted 28-Mar-14 4:43am

Dave Kreskowiak

Comments

planetz 28-Mar-14 12:47pm

I have checked it...it is running on 'Any CPU'.....but I do not have any option to change it to x64 or x86...that is my problem....and I cannot add them also....

Dave Kreskowiak 28-Mar-14 15:34pm

I've NEVER seen that box not be able to select x86, x64 or Any CPU.

Dave Kreskowiak 28-Mar-14 15:35pm

Are you using an Express Edition of Visual Studio??

planetz 29-Mar-14 0:11am

I am using professional edition....the drop down only has Any CPU option..nothing else...how can I select anything else then?

Dave Kreskowiak 29-Mar-14 1:31am

I've never seen it have just the Any CPU option, ever.

planetz 29-Mar-14 9:20am

How can I add a screenshot here?? Then I can show you the dropdown list....

Dave Kreskowiak 29-Mar-14 9:31am

You can't. Post can post your screen shot on some image hosting site then post a link to it here.

But, that's kind of useless since I have no idea why the other options are not there.

planetz 30-Mar-14 0:48am

http://i61.tinypic.com/2b5dzs.png

Here is the link of screenshot...
And when I am trying to create new platform, the create new solution platform checkbox is not getting enabled....

http://tinypic.com/view.php?pic=2v3kl84&s=8#.UzehrfmSzBB

Was there something to be done during the installation process??

Dave Kreskowiak 30-Mar-14 1:49am

I already told you, the screen shot doesn't anything to me. I have NEVER seen, nor heard of those options not showing up in the drop down.

planetz 31-Mar-14 3:04am

Hi...I would like you to know that when I am creating project, I can create new platform in config manager and can add x64 in dropdown and the code runs fine...but when creating website create new platform checkbox is disabled and so solution can't be run....any suggestion/idea why is this happening?

Dave Kreskowiak 31-Mar-14 10:45am

How many times have I just told you that I have no idea why you don't have the other options in the drop down?

planetz 28-Mar-14 13:18pm

http://msdn.microsoft.com/en-us/library/ms228844(v=vs.90).aspx
this link here says in point 5: "Make sure the Create new project platforms check box is selected. If not, you will have to manage and add the configuration files, any platform dependent code that the wizard can generate for you, and other project files such as resources."
Now in my case the Create new project platforms check box is disabled...also from where can I get the resources??

Dave Kreskowiak 28-Mar-14 15:35pm

This is NOT what you're looking for.

planetz 24-Apr-14 12:19pm

i started the project from file--> new website...can that be a problem?
because when i made a console application from file---> new project, i can change the platform there and it runs fine...but for website only CPU is there and no new platform can be created!!

Jörgen Andersson · Answer 2 · 2014-03-30T22:27:00

Solution 2

Visual Studio is a 32 bit programme.
So if you want to be able to debug you website you need to install the 32 bit Oracle client and set your application pool in the IIS to "Enable 32 bit applications"[^]

Posted 30-Mar-14 22:27pm

Jörgen Andersson

Comments

planetz 19-Apr-14 10:26am

there is a big list in application pool...how to know which is for my project??

planetz 24-Apr-14 12:16pm

turning enable 32 bit application true or false in application pool is not helping....

planetz 24-Apr-14 14:12pm

I tried everything..nothing works...!!