This is kind of a wierd issue, so i will do my best to explain:
After share my application to a list of user, the SQL connection also shared but only one exception case: the connection cannot be shared an individual(male user) of the list. He can access to app but he can't use connection.
So I try to share that SQL connection manualy. I have success notification but he disappers on "Shared with" list after that (it's mean he can't use that SQL connection). What's wrong here?