You're actually right because casting my mind back, I can remember exactly the same kind of thing happening in places I worked for. I specifically remember discovering a race condition because they didn't understand about locking/trans iso levels.

Nonetheless if you're going to base your company's product around a database or anything else for that matter, you really had better get yourself sorted out WRT your tools, or it can become horribly expensive to fix or even fatal to your company.