I have a problem with my 10 month old female GSD from working lines, You would probably discribe her temperment as sharp and she has been thru basic ob and because of her sharpness I trained her around strangers and other dogs as much as I could with good success. Now my new problem is that whenever I walk outside in back the gsd runs to where our 9 year old male fixed cocker spaniel is lying down and puts her paw on him and then she ignores or does not hear me call her ( this is also a 1st. she always came in the past and I have trained her on up to 100 ft. of line to enforce this with good success up untill now) when I came to her to take her back to where I called her from she attacked the male dog and would not release untill I thru both dogs in the pool after a couple of minutes and then had to pin her when she tried attacked him again then I put her on lead and after a couple level 10 corrections she blew him off, Now today same thing except she did not attack and I did not come near, she again ignored my call she just stared at the cocker like she was in another world, its almost like she is protecting me or herslf from this little dog, The dogs do not sleep with me and usually eat after me also on walks she does not go thru doorways before me. I have done all I can think of to be alpha to this dog so my long winded question is What else can I do to adress this?????

I don't think the female is trying to protect you from the male cocker, I think she trying to tell him that she is the next Alpha. Start feeding her first, start addressing her like she is the next Alpha.

I have two dogs and I always leash the Alpha dog first, I always feed the the Alpha dog first, I let him come out of the door behind me first. I address there structure so that there is never a mix up.

Could be jealousy he lives inside and she doesn't.
I had to go back a read that again.

The cocker is older, if you have been going by which dog is older. This could be problem you are treating him like the alpha, change that and watch the results. This is just my opinion, it hard to tell whats going on just reading over the net.

She ignoring you because, you are ignoring her position in the pack and she wants to make sure the cocker knows better. Now this is just my opinion, but I don't think she is protecting you from the cocker.

your cocker is in serious danger of being badly hurt and I think it would be safest to keep them apart and only together under close supervision.
Your female also needs to learn that you will not tolerate ANY aggression to your other dog. You have to be able to correct her before she makes any type of move on or piles into the other dog. Maybe putting her back on a long line would allow you to administer a good, strong and swift correction as soon as she even makes a move toward the cocker or flicks her ears forward. Correct any posturing or body language of evil intent. I don't hold with letting dogs elect themselves "alpha" - you is the alpha and everybody under you has to learn the rules and what flies and what doesn't. Any time a dog gets into a fight it is one step closer to being a habit. Corrections after a fight aren't as good as corrections before - after or during a fight they are so revved up they don't feel a correction as much as they need to. Also you could get bit very badly trying to get the GSD off the cocker. Been there, done that and it hurts like he**! Dog fights always suck.

your cocker is in serious danger of being badly hurt and I think it would be safest to keep them apart and only together under close supervision I completely agree...

Note these are only suggestion unless in the present of the action no clear cut option could really be taken. Except that one of these dogs are going to get hurt, eventually.

This is avoidable if you recognize how dogs think, if she thinks that you are treating the Cocker like the Alpha, the female may continue this posturing and attcking the Cocker the way you mentioned.

You can try to interven and you should to stop this aggression but, straighten out the pack structure is a way to do it. I think.

This has been disccussed a number of times and both of these viewed were mentioned. Its my opinion that recognize the pack structure and she will have no need to put the Cocker in its place.

It doesn't sound like its just dog aggression out of dislike, fear or territory because there is no blood being spilled. Its more like she just saying don't even think about buddy, I'm next.

Sure one of them could get hurt if this is not ironed out, but I think the other suggestion should have been started when she was young. Now you would have to be correctingbustin her ass, every time they are left alone.

Now seperation was mentioned and thats another option. But not if you want them to live together and it want solve the problem, if ever together again.