Patent
1993-04-21
1996-06-04
Baker, Stephen M.
395488, G06F 1216
Patent
active
055242057
ABSTRACT:
Each node in a data processing system contains at least one undo buffer and one least one redo buffer for insuring that any changes made to a section of a non-volatile storage medium, such as a disk, can be removed, if a transaction has not been committed, or can be recreated if the transaction has not been committed. The undo buffers each correspond to a different uncommitted transaction. The redo buffer contains the changes made to a copy of the section which is maintained in the memory.
REFERENCES:
patent: 4498145 (1985-02-01), Baker et al.
patent: 4507751 (1985-03-01), Gawlick et al.
patent: 4686620 (1987-08-01), Ng
patent: 4751702 (1988-06-01), Beier et al.
patent: 4853843 (1989-08-01), Ecklund
patent: 4868744 (1989-09-01), Reinsch et al.
patent: 4878167 (1989-10-01), Kapulka et al.
patent: 4945474 (1990-07-01), Elliott et al.
patent: 5043866 (1991-08-01), Myre, Jr. et al.
VAX Rdb/VMS V4.0 Support Internals Student Guide (Oct. 1, 1990).
Rothermel, et al., "ARIES/NT: A Recovery Method Based on Write-Ahead Logging for Nested Transactions," Proceedings of the Fifteenth International Conference on Very Large Data Bases, (1989), pp. 337-346.
C. Mohan, et al., "A Case Study of Problems of Migrating to Distributed Computing: Data Base Recovery Using Multiple Logs in the Shared Disks Environment," Research Report, (1990), pp. 1-15.
C. Mohan, et al., "ARIES: A Transaction Recovery Method Supporting Fine-Granularity Locking and Partial Rollbacks Using Write-Ahead Logging," Research Report, (1989), pp. 1-45.
Crus, "Data Recovery in IBM Database 2," IBM Systems Journal, vol. 23, No. 2, 1984, pp. 178-188.
Gray, "Notes on Data Base Operating Systems," Research Report, (1978), pp. 1-111.
Kronenberg et al., "VAXclusters: A Closely-Coupled Distributed System," ACM Transactions on Computer Systems, vol. 4, No. 2, May 1986, pp. 130-146.
Lindsay, et al., "Notes on Distributed Databases," Research Report, (1979), pp. 1-57.
Rengarajan et al., "High Availability Mechanisms of VAX DBMS Software," Digital Technical Journal, No. 8, Feb. 1989, pp. 88-98.
C. Mohan, et al., "ARIES: A Transaction Recovery Method Supporting Fine-Granularity Locking and Partial Rollbacks Using Write-Ahead Logging," Research Report, (1989), pp. 1-45.
Stonebraker, "The Case for Shared Nothing," University of California, Berkely, pp. 4-8.
Shoens, "Data Sharing vs. Partitioning for Capacity and Availability," IBM San Jose Research Laboratory K55/281, pp. 10-16.
Shoens, et al., "The Amoeba Project," IEEE (1985), pp. 102-105 Strickland, et al., IMS/VS: An evolving system, IBM SYST J, vol. 21, No. 4, (1982), pp. 490-513.
Bhide, "An Analysis of Three Transaction Processing Architectures," Proceedings of the 14th VLDB Conference, Los Angeles, California, (1988), pp. 339-350.
Kohler, W., "Overview of Synchronization and Recovery Problems in Distributed Databases", Fall COMPCON 80, Sep. 23-25, 1980, pp. 433-441.
Yelavich, B., "Customer Information Control System-An evolving system facility", IBM Systems Journal, vol. 24, Nos. 3/4, 1985, pp. 264-278.
Joshi Ashok M.
Lomet David B.
Raghavan Ananth
Rengarajan Tirumanjanam K.
Spiro Peter M.
Baker Stephen M.
Oracle Corporation
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