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Groups > comp.lang.java.programmer > #10490

Re: 64-bit gotcha

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On 03/12/2011 2:01 PM, Peter Duniho wrote:
> But as with Java, you cannot call native DLLs using the wrong bitness of
> a .NET program. A .NET program running as a 32-bit process can call only
> 32-bit DLLs, and a .NET program running as a 64-bit process can call
> only 64-bit DLLs. Other than the way that the choice is made for what
> kind of bitness the program is running in, it's pretty much the same
> situation.

That also applies to ADO.Net drivers, as we discovered at work.

"I included the Oracle .net driver in the installation package, I don't 
know what happened!"

"Did you remember Oracle's .Net driver will attempt to open DLLs already 
installed in the system over the ones in the program's directory?"

"..."

"You're app is compiled & packaged as 32-bit but running on a laptop 
with 64-bit Windows 7 which already has Oracle drivers installed."

"....  Ohhhhh!"

So don't forget to ask what OTHER DLL's your DLL is opening.

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Thread

64-bit gotcha Roedy Green <see_website@mindprod.com.invalid> - 2011-12-03 02:47 -0800
  Re: 64-bit gotcha Arne Vajhøj <arne@vajhoej.dk> - 2011-12-03 15:20 -0500
    Re: 64-bit gotcha Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-12-03 14:01 -0800
      Re: 64-bit gotcha Roedy Green <see_website@mindprod.com.invalid> - 2011-12-03 18:17 -0800
        Re: 64-bit gotcha Martin Gregorie <martin@address-in-sig.invalid> - 2011-12-04 12:06 +0000
          Re: 64-bit gotcha Jeff Higgins <jeff@invalid.invalid> - 2011-12-04 08:57 -0500
            Re: 64-bit gotcha Jeff Higgins <jeff@invalid.invalid> - 2012-02-25 19:15 -0500
              Re: 64-bit gotcha Martin Gregorie <martin@address-in-sig.invalid> - 2012-02-26 00:53 +0000
                Re: 64-bit gotcha Jeff Higgins <jeff@invalid.invalid> - 2012-02-25 20:26 -0500
          Re: 64-bit gotcha Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-12-04 10:04 -0400
        Re: 64-bit gotcha Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 19:50 -0400
      Re: 64-bit gotcha Travers Naran <tnaran@gmail.com> - 2011-12-04 09:17 -0800
      Re: 64-bit gotcha Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-12-04 18:33 -0600
        Re: 64-bit gotcha Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-12-04 16:56 -0800
        Re: 64-bit gotcha Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 19:53 -0400
      Re: 64-bit gotcha Arne Vajhøj <arne@vajhoej.dk> - 2012-03-12 19:49 -0400

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