Oyoro was a planet in the Milky Way galaxy, temporarily controlled by the Jaffa Ahruk, which houses a Stargate.
Olokun sent Ahruk to take control of the planet, until Olokun could arrive. But Ahruk take more serious his mission than he supposed to. He appeared as an emperor on Oyoro and so he took domain of the planet. It is unknown if he continues to do so. (RPG: "System Lord Plot Hooks")