Thanks for the information. I will look at those other tools, but probably we will move to IBM's Object Comparison Tool, the decision is almost set.
Do you know anything about this tool? Generally I would like to know whether anyone uses it

We lastly got IBM's Optim tool for archivisation, and it occured that there were a lot of problems, as almost nobady uses it on zOS. Therefore I would like to confirm that Object Comparison Tool is usable. As I know is not so flexible as ChangeManager for DB2, but should have all the functionality.
Thanks again for your reply.