Can you be partially omniscient?
Isn't god, god because he knows what humans do not know? He knows all?
He knows all that can be known. We like to define God, we cannot, in many cases we make human assumptions based upon what we want or think. God is a one way street, from Him to us as he chooses to make known. Except for that, we know nothing about Him.
Regarding omniscience, if it is defined as absolute knowledge of everything that has, is, or will ever happen, then God is not omniscient.
However, He is omnipotent, he has absolute power over everything. Further, He has absolute knowledge of everything that is possible to know.
He has the power to bring about what he wills, when he wills it.
He has the knowledge to know perfectly every possibility for anything that might occur, and has the power to prepare for it, and implement the preparation if required and he chooses to do so.
Let me give you a crude example. If God chooses to preserve your life regardless of all the forces that exist, it might look like this.
You go mountain climbing and you fall and have a very serious break in your leg. God didn´t know this would occur, but he knew every possibility of what might occur, and was prepared to respond.
So, at the base of the mountain that day, a rescue helicopter that rotated bases around the mountain, happened to be closest to where you are, and a world renowned orthopedic surgeon happened to be friends of the pilot and was visiting, and you are rescued.
The concept isn´t primarily about physical events, it is about the preservation of free will, the ability for God to create beings who can freely choose, and are not bound by foreknowledge that cannot be wrong. A person then is just following a script, and cannot do except what the script commands.