2002 Nissan Altima oil consumption

I think I remember there being a campaign (a recall) that had something to do with the catalytic converter. And one of the symptoms was high oil useage.

And cats are covered for 8 years under federal law.

Call a nissian dealer with your VIN and ask if your car was part of the cat recall.

But to answer your question.
You have to figure out if it's leaking or burning the oil first. Before we can tell you what to fix.