On the ofbiz a problem!

[Mr Li]

   ofbiz project leader, how are you?
   I have a question to ask:
   In order module, such as sales orders, when an excessive number of products, 
create order the operating speed will be very slow, or even thrown out of the 
unusual transaction can not complete the order operation.
I do not know what the problem, ofbiz bottom not support?
Look forward to your reply!