In a large bowl, combine oats and buttermilk; let stand for 5 minutes. In a small bowl, combine the flour, sugar, baking powder, salt and baking soda; stir into oat mixture. Add oil and egg. Fold in pecans. Let stand for 10 minutes.
Pour batter by 1/4 cupful onto greased hot griddle. Turn when bubbles form on top; cook until the second side is golden brown.