Bidirectional database replication scheme for controlling...

G - Physics – 06 – F

Patent

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G06F 17/30 (2006.01)

Patent

CA 2403294

Transaction ping-pong is selectively prevented in a bidirectional database replication system (28). The system (28) has a plurality of nodes (30, 40) connected via communication media in a topology. Each node (30, 40) includes a database (32, 42) and a transaction transmitter or collector (36, 50) which sends transactions posted to the database to a database at one or more other nodes for replication in the databases of the one or more other nodes. All transactions to be posted to databases in remote nodes that were sent by a local node are detected, and the database at the local node is inhibited from posting selective transactions which were detected as being originally sent by the local node.

L'invention concerne la prévention sélective de l'effet </= ping-pong >/= dans une transaction dans un système (28) de reproduction bidirectionnelle de bases de données. Le système (28) possède plusieurs noeuds (30, 40) connectés par un support de communication dans une topologie. Chaque noeud (30, 40) comprend une base de données (32, 42) et un émetteur ou un collecteur (36, 50) de transactions qui envoie les transactions, expédiées à la base de données, à une base de données dans un ou plusieurs autres noeuds en vue d'une reproduction dans les bases de données du noeud ou des autres noeuds. Toutes les transactions à expédier aux bases de données dans des noeuds à distance, envoyées par un noeud local, sont détectées et la base de données dans le noeud local est empêchée d'expédier des transactions sélectives détectées comme étant envoyées à l'origine par ce noeud local.

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