Does the cam sensor effect oxygen sensors?

No....Cam Sensors (or more correctly, Camshaft Position sensors) are completely unrelated to the Oxygen Sensors (also known as O2 or Lambda Sensors).

Camshaft Positions Sensors are mounted near the engine's Camshaft, and determine the relative position of the camshaft at any particular point in time. The engine control software uses this signal for a variety of engine control tasks.

The Oxygen Sensors are mounted in the exhaust manifold, exhaust system or in both (depending on the make, model, and year of the car. They are used by the engine control software to determine if the A/F mixture is rich or lean, which is then adjusted accordingly. They are also used by the engine control software to diagnose the catalytic converter (as required by EPA and CARB regulations).

These, of course, are two separate systems.

One sensor cannot cause the other to malfunction.

Of course, if your Camshaft were somehow damaged (not your Camshaft Sensor, but your Camshaft itself) then a misfire could occur, that might damage the O2 Sensor (as well as other components, such as the catalytic converter).

But the car would run so poorly, that you'd be aware of this already.