Failure tolerant transaction processing system

Details Failure tolerant transaction processing system Failure tolerant transaction processing system

G - Physics

06

F

G06F 12/00 (2006.01) G06F 9/46 (2006.01)

Patent

CA 2657676

[PROBLEMS] In a business system, it is important to reduce the time of a temporary service interrupt due to failure of a server or a network. The current failure countermeasure is generally performed by a failure detection and a handover. However, the failure detection requires at least 10 seconds to several minutes and the service interrupt time is longer than this, which causes a significant problem. [MEANS FOR SOLVING PROBLEMS] Suggested is a system for retransmitting process to a backup server firm from a client if no response is received for a certain time without waiting for the failure detection. A transaction process mechanism includes a transaction start process mechanism combining an exclusive control using the process authority Token and data matching and a commit process mechanism combining the commit enabled/disabled judgment based on the distributed agreement and the update data replication. This mechanism realized a system capable of reducing the service stop time upon failure occurrence to a time of such an order that the service does not stop when viewed from the client.

Dans un système d~entreprise, il est important de diminuer la durée d~une interruption temporaire de service du fait de la panne d~un serveur ou d~un réseau. Les contre-mesures actuelles en cas de panne sont généralement une détection de panne et un transfert. Toutefois, la détection de panne demande entre 10 secondes et plusieurs minutes et la durée d~interruption de service est encore plus longue, ce qui pose un problème important. L~invention concerne un système de retransmission de processus d~un client vers une entreprise de serveur de sauvegarde si aucune réponse n~est reçue pendant un certain temps, sans attendre la détection d~une panne. Un mécanisme de processus de transaction comprend un mécanisme de processus de début de transaction combinant un contrôle exclusif utilisant le jeton d~autorité de processus et la correspondance de données et un mécanisme de processus d~engagement combinant le jugement engagement activé/désactivé basé sur un accord distribué et la réplication de données de mise à jour. Ce mécanisme produit un système pouvant diminuer la durée d~arrêt lors de l'occurrence d'une panne de façon telle que, vu par le client, le service ne s~interrompt pas.

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