In 2-5, it lists your spells per day - as in, how many you can cast between rests.
In 2-6, it lists your spells known - as in, what you pick from when you're casting.
Oracles work like Sorcerors, having more spells per day than a Wizard / Cleric, and casting on-the-fly instead or preparing them, but having a smaller selection to pick from.