As you face the court from your seats, lower number seats are on your right.
In the upper level (200s) at Oracle Arena, SRO tickets will place you behind the last row of reserved seating in your respective section. In most upper level sections, including section 212, there are two "rows" of SRO tickets just behind row 17.
MZC is a common abbreviation for the Mezzanine Club at Oracle Arena. This is a prime seating area located just above the 100 level on the north end of the arena. There are three rows of seats in the Mezzanine Club, often labeled R1-R3. While these seats don't provide great views of the game, ticketholders enjoy such benefits as all-inclusive food and drink.