System and method for assuring atomicity of distributed update r

Details System and method for assuring atomicity of distributed update r System and method for assuring atomicity of distributed update r

1993-12-06

1997-05-13

Black, Thomas G.

39520001, 39520002, 39520003, 395610, 395611, G06F 1730, G06F 1740, G06F 1900

Patent

active

056301243

ABSTRACT:
In parallel database management systems, database update requests typically result in activity at several nodes. Rollback of all updates is required if the update of any node fails. A coordination process monitors for failure or success of updates. The coordinator further provides for distinguishing activities that have taken place at any given node from the other nodes for different database update requests. Savepoints are local. This allows rollback of a selected update without affecting nodes which did not process the update.

REFERENCES:
patent: 5140689 (1992-08-01), Kobayashi
patent: 5201044 (1993-04-01), Frey, Jr. et al.
Richard Koo, Sam Toueg, Checkpointing and Rollback-Recovery for Distributed Systems, Department of Computer Science Cornell University Ithaca, New York 14853, pp. 1150-1158.

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