Abstract: A system and a method for controlling the operations of a manufacturing facility with production resources that execute a production process and a manufacturing execution system with a production modeler and a production scheduler. A man-machine interface and/or graphical user interface enable the user to enter production orders and production scheduling data into the execution system. A production scheduler database stores production orders and production scheduling data. A data server process updates sensitive data that are required for real-time scheduling when a user modifies sensitive data. The data server process executes an event list queue with the data modification events launched by the database, periodically checks the event list queue for data modification events, reads from the database only the modified data of the sensitive data and/or sensitive class of data, and merges the modified data with the existing data. The updated data are then accessible to all users.