| 摘要 |
PROBLEM TO BE SOLVED: To normally process a transaction composed of a series of two or more requests while distributing the load on a plurality of database servers which performs processing to a shared database. SOLUTION: The system comprises a plurality of business servers 1 each including a DB connection part 15 and a listener connection part 11, a plurality of DB servers 3, and a load distribution device 5 which connects each business server 1 with each DB server 2, and reconnects this business server 1, when a request is received therefrom within a predetermined time after cutting this connection, with the DB server 3 related to the last connection. When each DB connection part 15 substantially simultaneously issues the request, the load distribution device 5 performs the connection so that the number of business servers 1 connected to the DB servers 3 is substantially equal. After this connection is cut, the listener connection part 11 periodically issues a request so that the non-connected state is not continued for a predetermined time or more. COPYRIGHT: (C)2009,JPO&INPIT
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