Cobol .DAT backup solution

Hi,

Been reading most of your topics lately and I realized I'm such a
newbie. Well anyway going directly to the topic.....

Given so much Cobol code power nowadays (those with Cobol COM objects,
Web services, SOAP), I usually encounter applications that runs 24/7.
Considering backing up DAT/IDX files, I still need to inform users to
abort their processing time and do a very "QUICK" backup.

Is there any way that we could backup DAT/IDX while users are
processing (even updating) data files? Because usually the OS
(Windows) will lock the files while directly copying or zipping it. Any
suggestions?

By the way Im using Microfocus NetExpress v3.11. Could "CBL_COPY_FILE"
function works with this problem?

.