PURPOSE: To avoid the generation of a server process waiting state caused by a non-answer by monitoring by a timer a transaction processing time, in a distributed data base server system.

CONSTITUTION: In a server process 4 of a distributed data base server system 3, a transaction timer monitoring means 42 is provided in addition to a data base access means 41. At the time of accessing a data base 5 by an access request from a distributed data base client system 1, the data base access means 41 actuates the transaction timer monitoring means 42, executes an exclusive lock on exclusive control units 5i (i is a, b...n), and thereafter, executes an access processing. In the case a transaction end request is or sent even if a prescribed time elapses, the exclusive lock is related by a time-out motive of the transaction timer monitoring means 42, and the transaction processing is finished abnormally.