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    User-1078520054 posted

    I have a WCF app working all great on my local PC.  No issues.

    However:  when I upload the contents to our test server, I am getting the following error:
        An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)

    I believe this is in reference to our Oracle.DataAccess.dll file, but I can't figure out what to do.  We have another web application on the same server running the same .dll with no issues. 

    What is confusing me even more though is: 
        Oracle.DataAccess on my computer is 1,400 KB
        Oracle.DataAccess on the server is 1,396 KB

    I am not sure where this file on the server came from, as we didn't install ODP.Net on the server, just using the Oracle.DataAcess.dll located in the projects /bin folder. 

    But if I use the mysterious file on the server:  I get the following error:
         An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
       
    If I push up the Oracle.DataAccess that is local to my computer to the server, the error is:
         Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies.  An attempt was made to load a program with an incorrect
         format.

    I am not sure why I can't get this running on the server, but also why different error messages.

    Any help is greatly appreciated

    Wednesday, August 7, 2013 4:40 PM

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    User1051163829 posted

    Hi,

    Have you tried regsvr32 /u on the dlls in all locations you cna find on the server? Perhaps there's one in the GAC or perhaps an older app has one registered - I think that might produce similar symptoms?

    run cmd as administrator and "regsvr32 /u <path>\Oracle.DataAccess.dll" and try again?

    HTH's

    Wednesday, August 7, 2013 4:57 PM
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    User-1078520054 posted

    I haven't ran REGSVR32 on my local / development machine because we ran the ODP.Net installation on them, which I assume should have done what ever was needed to register the files. 

    On the server:  I am not sure as I am not the administrator for it, but why would the same Oracle.DataAccess.dll file work in the Web application, but not in the WCF application?  If it was a registered issue, I would expect similar results for both applications on that server. 

    Wednesday, August 7, 2013 5:01 PM
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    User220959680 posted

    When 32-bit applications run on IIS 7 (and/or 64-bit OS machine), same exception is thrown.

    From the IIS 7, right click on the applications' application pool and go to "advanced settings" and change "Enable 32-Bit Applications" to "TRUE".

    Let us know the out come.

    Thursday, August 8, 2013 4:59 AM
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    User-1078520054 posted

    Thank you so much for the help, it is greatly appreciated. 

    Unfortunately though, that didn't solve the issue.  I get the following:

    The content type text/html; charset=utf-8 of the response message does not match the content type of the binding (text/xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were: '<!DOCTYPE html>
    <html>
        <head>
            <title>Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies. An attempt was made to load a program with an incorrect format.</title>
            <meta name="viewport" content="width=device-width" />
            <style>
             body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
             p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
             b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
             H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
             H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
             pre {font-family:"Consolas","Lucida Console",Monospace;font-size:11pt;margin:0;padding:0.5em;line-height:14pt}
             .marker {font-weight: bold; color: black;text-decoration: none;}
             .version {color: gray;}
             .error {margin-bottom: 10px;}
             .expandable { text-decoration:underli'.

     

    When I set it back to false:  I get the following:

    An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
    Thursday, August 8, 2013 7:18 AM
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    User220959680 posted

    ok.

    Go throught the solution at http://forums.asp.net/t/1647562.aspx/2/10

    and let us know further.

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Thursday, August 8, 2013 9:01 AM
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    User-1078520054 posted

    Thank you so much for the help.  We found the solution in the link you posted.  Specifically it was step #2, to install ODP.Net on the server and then set the Application pool to 32-Bit.  Greatly appreciate all your help.

    Thursday, August 8, 2013 10:23 AM