Effective in version 10.4.0, you can create a Db2 Warehouse connection to connect to IBM Db2 Warehouse from PowerCenter. You can import Db2 Warehouse objects as sources and targets to create mappings, and run a session to read data from or write data to Db2 Warehouse.
For more information, see the
Informatica 10.4.0 PowerExchange for Db2 Warehouse User Guide