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 have installed a Web app on IIS 7.0 Windows Server 2008 R2 64bit.
I am referring an oracle.DataAccess.dll;
When I try to access the application I get the following message:
“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.”
Can anybody help me, please?

Edit config custom section in IIS

I am working on big ASP.NET project(we using ASP.NET 3.5) which comprised of 5 different WebSites and some shared assemblies. Recently I added custom section into web.config files for each site. When I deploy all these applications, each site is deployed separately under same app pool.
Is there any way to make this section editable in IIS on site level, just like you can edit ConnectionString section for each site?

How to add users in IIS Manager for an ASP.NET 4.0 application?

I have installed an ASP.NET 4.0 Web forms application in IIS 7.5. If I set the application pool to DefaultAppPool (.NET Framework 2.0) I get the icons for Providers, .NET-Roles and .NET-Users displayed on the configuration page for the application in IIS Manager and I can manage users and roles within IIS. (I’m using Forms authentication.)

IIS ASP.Net Website – ManagedPipelineHandler Error ( An operation was attempted on a nonexistent network connection)

I am experiencing a strange issue. I have an ASP.Net web application that uses Forms Authentication. If I open the log-in page and there is a couple of minutes of inactivity, the log-in attempt times out or IE / FireFox display “Cannot display this page”. If there is no pause or lack of activity, there is no issue and the website run as expected.