A performance adjuster for an application server and a relational database system that uses a service class configuration information synchronizer coupled between the application server and the relational database to update the relational database with server class configuration information stored in the application server. A performance data collector and analyzer is coupled between the application server and the relational database to collect application server performance data. A performance controller is coupled between the application server and the relational database, and to the performance data collector and analyzer, to obtain the collected performance data and change flow rates in the application server and the relational database if the collected performance data does not meet a predetermined threshold.