Oracle ORA-12154 error on local IIS, but not with Visual Studio Development Server

Question

I\'ve got an ASP.NET application that can connect to Oracle when it\'s started by Visual Studio Development Server, but when I deploy it to my local IIS, it does not connect

Answer 1

Found answer here:

Granting access to IIS 7.5 ApplicationPoolIdentity

When using "ApplicationPoolIdentity" with IIS 7.5 the corresponding user is (a virtual system user):

IIS AppPool\

You can grant this user permissions and check security setting by searching for this user. See the full explanation here:

http://www.iis.net/learn/manage/configuring-security/application-pool-identities

So basically just give permission to Oracle folder to the App Pool virtual user.