Patent ID: 6374243
Filing Date: 2002-04-16
Classification: G06F,Y10S

Abstract:
A database access system comprising:a plurality of database servers, each of which accommodates a database; an application server which is connected to said plurality of database servers, wherein said application server processes transactions for data base updating by means of a two-phase commit, comprising temporary updating and permanent updating, said application server includes: local transaction managers, each of which corresponds to each of the databases, and individually processes transactions for updating a corresponding database; a distributed transaction manager which individually provides commands for database updating to the local transaction managers; and a timer started by said distributed transaction manager when said distributed transaction manager recognizes that a first database to be updated is in a state of temporary updating, said timer providing a command for returning each database to a state before temporary updating to said distributed transaction manager, when all of said databases to be updated are not temporarily updated before an occurrence of a time-out.