ASP.Net Deployment problem - Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies

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Description: An ASP.Net project runs fine in debugging mode. After the build, the project was deployed in IIS 7.5. For the deployed project in IIS, I clicked Manage Application > Browse to open it, but got the error:
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.
Before this build, I did not load Oracle.DataAccess.dll, and there was no problem at all. After I loaded the Oracle.Access.dll, this type of error comes out. Then I tried to clean the colution, and then removed/disabled/commented out the Oracle.DataAccess.dll component, but the error still exists after the deployment. This error is strange to me since there is NO Oracle.Access in my project. Appreciate if you can help for this.

Posted 18-Mar-14 4:37am

Member 10454592

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2 solutions

Solution 1

The solution could be if you check the references folder in your project and if there is your Oracle.DataAccess.dll file just simple remove it and after rebuild your solution.

Posted 18-Mar-14 4:46am

norbitrial

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[no name] 18-Mar-14 11:53am

Tried your approach but not working (as explained in my posted thread). But I figured it out already (see my Solution part). Thanks.

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Member 10454592 · Accepted Answer · 2014-03-18T04:59:00

By referencing

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<a href="https://community.oracle.com/thread/2267977?start=0&tstart=0">https://community.oracle.com/thread/2267977?start=0&tstart=0</a>[<a href="https://community.oracle.com/thread/2267977?start=0&tstart=0" target="_blank" title="New Window">^</a>]

, I set "Enable 32-bit Applications" (IIS Application Pools > Advanced Settings) to "true". The error was gone. Thanks for your review.