Yesterday encountered a super depressed problem has been prompted by the wrong installation of the 32-bit Oracle client components in 64-bit mode to run, just beginning to assume that the client is loaded 32-bit caused by later discovered and IIS has a relationship
Special note that IIS has a program pool that has a property enabled 32-bit application by default is True windows2008 Server system IIS default is True
Enable 323-bit applications
If you set this property to True for an application pool on a 64-bit operating system, the worker process that serviced the application pool will be in WOW64 mode (WOW64-mode processes will load only 32-bit applications)
Therefore, IIS runs in 64-bit mode when the Oracle client that invokes the server is 64-bit and is set to True when the 32-bit Oracle client component is prompted for installation
IIS is not connected to the database