Research in Functionally Distributed Computer Systems Development. Volume XIX. Roll-Back and Recovery in Distributed Data Base Systems

摘要

One of the major obstacles to the widespread development and utilization of distributed data base management systems is the lack of an efficient recovery technique. A methodology is presented here for recovery of distributed data bases. The central operation of the recovery technique is rollback of a data base application task on the processor which controls access to the data. The rollback procedure restores the data base to its original state prior to the execution of the application task and determines the set of applications tasks which may have been effected by that task. Tasks that have not operated upon data altered by tasks being rolled back are not affected by the procedure. The rollback procedure attempts to minimize the time and space requirements for recovery. (Author)