| 摘要 |
PROBLEM TO BE SOLVED: To suppress simultaneous accesses to an identical record in a database.SOLUTION: In a network system 100, a distribution processing device 101 accepts a group of processing to a database 110 from a client device C. When the accepted processing group is distribution-processed by nodes N1-Nn, the distribution processing device 101 makes adjustment so that each of processing sets, having a record of an identical attribute name as a processing object, is not assigned to the nodes N1-Nn at the identical timing. Simultaneous accesses to the identical record in the database 110 are thereby prevented, and wait conditions for lock releasing accompanying exclusive control of accesses to the database 110 are reduced, so that the performance deterioration of the network system 100 is avoided. |
