Could not load file or assembly 'Oracle.Web, Version=2.112.1.0... The system cannot find the file specified. (It's already loaded in my GAC)

Question

I'm trying to run my web app which references Oracle.Web, which is already loaded in my GAC:

When I run my web app, I get the error message:

The Oracle.Web DLL is 32-bit.

EDIT: Here's a printout of the assembly bind failure log for Oracle.Web. Basically, it fails to load from the GAC:

* Assembly Binder Log Entry (6/19/2013 @ 10:20:49 AM) *

The operation failed. Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\mscorwks.dll Running under executable c:\windows\system32\inetsrv\w3wp.exe

--- A detailed error log follows.

=== Pre-bind state information === LOG: User = IIS APPPOOL\DefaultAppPool LOG: DisplayName = Oracle.Web, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342 (Fully-specified) LOG: Appbase = file:///C:/blah/HR/ForHR/HRWS/ LOG: Initial PrivatePath = C:\blah\HR\ForHR\HRWS\bin LOG: Dynamic Base = C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\HRws\c1e0f910 LOG: Cache Base = C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\HRws\c1e0f910 LOG: AppName = 1f90b2c5 Calling assembly : (Unknown). === LOG: This bind starts in default load context. LOG: Using application configuration file: C:\blah\HR\ForHR\HRWS\web.config LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Aspnet.config LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v2.0.50727\config\machine.config. LOG: Post-policy reference: Oracle.Web, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342 LOG: GAC Lookup was unsuccessful. LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/HRws/c1e0f910/1f90b2c5/Oracle.Web.DLL. LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/HRws/c1e0f910/1f90b2c5/Oracle.Web/Oracle.Web.DLL. LOG: Attempting download of new URL file:///C:/blah/HR/ForHR/HRWS/bin/Oracle.Web.DLL. LOG: Attempting download of new URL file:///C:/blah/HR/ForHR/HRWS/bin/Oracle.Web/Oracle.Web.DLL. LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/HRws/c1e0f910/1f90b2c5/Oracle.Web.EXE. LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/HRws/c1e0f910/1f90b2c5/Oracle.Web/Oracle.Web.EXE. LOG: Attempting download of new URL file:///C:/blah/HR/ForHR/HRWS/bin/Oracle.Web.EXE. LOG: Attempting download of new URL file:///C:/blah/HR/ForHR/HRWS/bin/Oracle.Web/Oracle.Web.EXE. LOG: All probing URLs attempted and failed.

QUESTION: Does anyone have any ideas as to why I'm having this issue?

Solution 1

I'm not exactly sure why this didn't work, but what I did was simply install the 32-bit and 64-bit versions of ODAC 11.2 Release 5, which took care of registering all required assemblies in the GAC, among several other tasks I'm sure. Once installed, I ran the app, and it worked fine. Thanks to all that have contributed to this.

Solution 2

You need enable it for 32 bit application in the application pool your website from IIS.

open IIS>application pool> Enable 32 bit application= true