Are you sure you are on V9.7? It works on my 9.7 DB but not my 9.5. What is the output of db2level?
Yes, I've amended my top post. I am actually on v9.5. The confusion for me came from finding v8 docs on those functions, and figuring that my version must have had it. It appears though v9.7 for Windows is the earliest version with that functionality. I missed the v8 z/OS distinction there.