System, method and program for performing two-phase commit with

Details System, method and program for performing two-phase commit with System, method and program for performing two-phase commit with

1996-09-25

1999-03-16

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707204, 707201, 707 8, G06F 1700

Patent

active

058843272

ABSTRACT:
The system, method, and program of this invention allows a two-phase commit protocol to work properly, even when the client acting as the coordinator does not have a log to record two-phase state information. In a preferred embodiment, the client in a client/server distributed transaction processing system is a personal computer. The client, without a recovery log, acts as a coordinator of a commit process. The coordinator migrates, i.e., passes, responsibility for resynchronization, and any associated logging requirement, to a server, e.g., to any of the connected relational database management system (RDBMS) servers, which is a participant in the transaction. The server uses its own recovery log for use in satisfying the logging requirement.

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Jefferey Ullman, Principles of Database And Knowledge-Base Systems, pp. 560-564, 586, 1988.
"Recovery Protocol Using A Common Log", P. Homan, B.G. Lindsay, R.L. Obermarck, IBM Technical Disclosure Bulletin, vol. 24, No. 11B, Apr. 1982, pp. 6211-6212.
"Presumed Abort Protocols", B. Lindsay, C. Mohan, IBM Technical Disclosure Bulletin, vol. 26, No. 7A, Dec. 1983, pp. 3379-3381.
"Two-Phase Commit Optimizations in a Commercial Distributed Environment", G. Samaras, K. Britton, A. Citron, C. Mohan, Distributed and Parallel Databases 3, 325-360 (1995).
"Systems Network Architecture", Lu 6.2 Reference: Peer Protocols, IBM Document No. SC31-6808-1, Jun. 1990, Chapter 8.

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