This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed.

  • I have installed SQL 2014 reporting services in native mode on windows 2012 server r2 x64.  I currently have visualstudio 2013 installed and oracle 11g x32 client installed.  When i connected to my oracle source within visual studio, it works just fine, no problems at all, but when i deploy the report and run from a browser, I get the following:

    An error has occurred during report processing. (rsProcessingAborted)
    Cannot create a connection to data source 'OMSPROD'. (rsErrorOpeningConnection)
    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.
    An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)

    Like i said, this runs just fine within  Visual studio, but not from the web after its deployed.

  • apparently making this post helped me answer my own question..installed oracle client 64 bit as well and all is good

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