how much one can expect if he knows Oracle?

Question

or any software of such nature

Answer 1

$60,000 per year to start.

Answer 2

Depends upon how much experience you have and your geographic location. Entry-level positions with minimal experience only pay around $30,000 - $40,000.00 in most of the US, but you can make more ($100,000.00 or so) with experience or if you're in a place like Silicon Valley.