First thoughts on cavalier: Oath of Protection sucks, and Demanding Challenge needs to have some kind of Int requirement on the part of the target (or perhaps be mind-affecting) or it doesn't make in-game sense (I really can't see it working against a gelatinous cube, for instance). The order edicts also have a lot of potential to be either fun or lame, depending almost solely on how annoying your DM wants to be about it.
First thoughts on oracle: Wasting and Lame both suck (Lame's not as terrible, but it's still bad), Tongues is okay, Clouded Vision and Deaf are good, and Haunted is amazing; ideally, this needs to be evened out a little.