Atomicorp

I can not connect via SSH to the psa db, it is possible that ASL prevent me?
I see the password correctly
http://kb.parallels.com/en/427 (What is the root password for MySQL?)
but I always get the same error

[root @ linux7 ~] # mysql -uadmin -p'cat /etc/psa/.psa.shadow ' psa
ERROR 1045 (28000): Access denied for user 'admin' @ 'localhost' (using password: YES)
[root @ linux7 ~] #

That means that the username and/or password is wrong

You need to copy and paste the code from that KB exactly:
In your post, you had which (if that's what you are actually using) is wrong. For a start you are using single quotes rather than backticks, and that's probably where things are going wrong.

it is possible that ASL prevent me?

No, ASL has nothing to do with that. That error means your mysql username and/or password is wrong.