How to know exactly the database update have finished?

Hi all,

I use BDC to confirm a Transfer Order, the last screen is reserved for user. User may confirm all the items or some of them or none. So I want to select the TO item data after the BDC to get the confirmed items for the nexe process. Now the problem is, if I select data just after the BDC, the database still not updated yet, so I have to use the statement: WAIT UP TO 2 SECONDS. Is there any better solution for this?