No, unfortunately there is no such thing as an oath vault. However, it's important to remember that oaths and promises are still important and should not be taken lightly. An oath is a solemn promise to do something or to refrain from doing something, and it should be taken seriously. It is a sign of trustworthiness and honor, and breaking an oath can have serious consequences. Therefore, it is important to take the time to think through any promises or oaths you make before agreeing to them.