For the use of this destination, the appropriate version (32bit for 32bit OS, 64bit for 64bit OS) of the ADO .NET driver must be installed. Select the IBM Data Server Driver Package and then the IBM Data Server Driver Package (Windows AMD64 and Intel EM64T) or IBM Data Server Driver Package (Windows 32-bit AMD and Intel x86).
http://www-01.ibm.com/support/docview.wss?uid=swg21385217

If a fixed version is available, you should download the fixedt version of the provider from the software vendor’s website.
http://www-01.ibm.com/support/docview.wss?uid=swg27016878