I don't think this is feasible, particularly because of the differences in SQL dialects on these two platforms -- they are small, but they do exist. And you won't be able to transfer procedures, whether SQL or COBOL, between the two -- you will have to rebuild them from sources, again, subject to the language differences.
Even if you manage to make this work, however, your test environment won't reflect the target, so whatever you're testing won't necessarily be valid in production.