Hi Sahil,
Did you check the system requirements here?
For IBM Database the requirements are:
- DB2 for iSeries V6R1 or higher
The installation of the IBM i Access Client Solutions - Windows Application Package software is required in all Front-End and Deployment Controller server machines.
The use of double-byte characters with DB2 databases is not supported.
You're in Outsystem's Cloud, so I think you need to contact the support to check/install the Windows Application Package in your Front-End and Deployment Controller server.
Cheers,
Luís