ODP Oracle.DataAccess was working with .NETFramework 4.5 but not with .NET Framework 4.0

Question

In my application, i'm connecting to an Oracle DB via ODP. I was using .NET 4.5 and everything was working fine but then for Windows XP compatibility i changed framework to .NET 4.0 on all the projects on my solution. Application is built on .NET 4.0 succesfully but can not connect to DB via ODP and throws exception:

Could not load file or assembly 'Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. An attempt was made to load a program with an incorrect format.

I had created a References folder in Solution folder(near projects) and adding the Oracle.DataAccess.dll file as reference from there to the projects those use it. May it be the problem?

Actually i get the dll from ODAC tools installation folder, did not separately download it. I don't think it's a version incompatibility. — gesus
– gesus, Commented Jun 19, 2013 at 11:52

gesus · Accepted Answer · 2013-06-19 12:53:45Z

1

In the main(winforms) project of the solution i changed the platform target from any CPU to x86 and now it's working on .NET 4.0.

answered Jun 19, 2013 at 12:53

gesus

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