Without knowing your hardware specifications I have tested on a home machine and it is possible. Meaning, the inserts took only 1 second, however preparing the insert took a few seconds. That was inserting into a clob a 2 MB XML file. What are you trying to insert? Specifics are much appreciated and will better enable us to assist you with your effort. There is a difference between inserting one 2MB row, and 2,000,000 1 byte rows.