Transaction clash management in a disconnectable computer...

Details Transaction clash management in a disconnectable computer... Transaction clash management in a disconnectable computer...

H - Electricity

04

L

H04L 12/12 (2006.01) G06F 9/46 (2006.01) G06F 11/14 (2006.01) G06F 17/30 (2006.01) H04L 12/24 (2006.01)

Patent

CA 2227430

A method and apparatus are disclosed for detecting and handling clashes that may occur when transactions performed on disconnected replicas of a database are merged after the computers carrying the replicas are reconnected. A variety of clashes are addressed, including those which arise from inconsistent add, remove, move, and modify operations. Transient clashes that would resolve themselves without significant intervention are distinguished from persistent clashes. Log patching, regression, key modification, duplication, and a variety of other tools for handling the clashes are described.

L'invention concerne un procédé et un appareil permettant de détecter et de gérer les conflits susceptibles de survenir lorsque des transactions effectuées sur des répliques déconnectées d'une base de données sont fusionnées après que les ordinateurs contenant les répliques sont reconnectés. Différents conflits sont traités, y compris ceux découlant d'opérations incohérentes d'adjonction, de suppression, de déplacement et de modification. Les conflits transitoires susceptibles de se résoudre d'eux mêmes sans intervention significative sont distingués des conflits persistants. L'invention porte également sur la correction, la régression, la modification des clés, la duplication des relevés et différents autres outils de gestion des conflits.

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