In the SQL Server world, if you want to create a database on a same server instance, from an existing database, all you have to do is something like:
RESTORE DATABASE <db_name>
FROM DISK = '\\<file path>\<file name>'
WITH MOVE '<logical data file name>_data' TO '\\<file path>\<file name>.MDF'
, MOVE '<logical log file name>_log' TO '\\<file path>\<file name>.LDF'
In DB2? OH NO!!! SORRY!!!
I guess you could use Platinum or some other tool, but that's like a mainframe wizard, and they always (wizards in general) are never 100% bullet proof.
At least not for my liking.
Anyway....first thing you gotta do...