I can deploy and debug SQL stored procs with Data Studio 126.96.36.199 to DB2 on i 6.1. The feature is a nice alternative to native methods of debugging similar stored procs.
But so far there are no steps I can figure out that lead to the same debug capability for SQL UDFs on DB2 for i 6.1. Deploying reports success, including a status message saying "Deploy for debug successful."
But then what? How is the UDF actually debugged?
There are so many options, features, configurations, perspectives, preferences, etc., that it's difficult to be sure how I manage to get anything at all to run on the server. A stored proc turned out to be fairly straightforward to get DS to call, but a UDF apparently needs some statement that references it to be created and submitted. Getting that done via debug doesn't seem obvious.