Abstract: The invention relates to data processing methods and systems including: a method of database replication in which information strings are assigned to serialisation groups for processing; a method of memory management in which data is read from a storage space area whilst no data is written to it; a method of replicating a database in which a dynamic table is created to provided processing information for database members; and/or a method of replicating a database wherein tasks are allocated to program components without program components interacting.

Abstract: A method of journaling changes to system objects. A dummy function is substituted for a system function. The system function is executed under operation of the dummy function. Copies of system objects changed by execution of the system function are generated for journaling. Execution of the dummy function is then completed. Preferably the system objects are OS/400 system objects. The system objects may be program objects, configuration objects, queues and space/memory mapped objects. The copies of the system objects may be journaled for replication on another system. A system and software for journaling changes to system objects are also disclosed.