Systems and methods are provided for logically locking data objects in a database. According to one implementation, a method is provided that comprises receiving, from one of a plurality of data processing modules, a request to logically lock one or more data objects to limit access by other data processing modules, and querying an internal buffer, in which information on logically locked data objects are stored, whether the data objects are already logically locked. The method also includes storing information on the data objects which are not yet logically locked in the internal buffer, and processing the non-logically locked data objects, such that when updating the data objects in the database, the data objects are locked in the database by a database management system.