System and method for tree map visualization for database performance data

A tree map visualization for database performance data comprises an observable object of a database system, a hierarchical structure of the database system, the hierarchical structure comprising a database relationship involving the observable object, a first performance metric associated with the observable object, and a second performance metric associated with the observable object, wherein the first performance metric associated with the observable object is represented by the size of a rectangle that represents the observable object and the second performance metric associated with the observable object is represented by a color of the rectangle that represents the observable object.