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 unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
How to automate the repository and domain back up process for disaster recovery in PowerCenter
How to find in which host the Repository Integration service is running in a multi node domain