This video details steps to configure a Workflow that uses an Oracle native connection in the source, and a DB2 native connection in the target. This example has been done in a Linux box.
How to find in which host the Repository Integration service is running in a multi node domain
How to unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
Converting and adding of a self signed certificate to use a Webservice Consumer transformation