I am not the best person to ask about the candida diet, because I don't really believe in it. if you believe in the diet, i think oats are a grain that you are to avoid, like most other grains.
my own cure was to cleanse and work on the power of my digestion, by liver flushing, whole foods diet (including grains and fruits), exercise, lifestyle changes, and many other things I learned from people here and from CureZone Experts like Andreas and his books. I can't recommend them enough. if you want to know more, look through the archives of Andreas forum from questions about Candida, he gets asked all the time.