05043866 is referenced by 104 patents and cites 23 patents.

Functions MINBUFLSN and LOWTRANLSN, implemented in a computerized routine, are defined and comprise first and second components of a checkpoint. MINBUFLSN is functionally related to a first update to a first of "dirty" data pages in the RAM buffer. LOWTRANLSN is functionally related to the earliest update of a sequence in a transaction table wherein each update corresponds to an uncommitted transaction. The two components are derived during write-ahead logging and stored in the log header periodically as a function of logging activity. Upon recovery, the checkpoint is retrieved and a functional comparison between the components thereof employed in the recovery algorithm. The conventional analysis pass of the recovery log is avoided and a reduced overhead during logging is provided as well as an efficient recovery.

Title
Soft checkpointing system using log sequence numbers derived from stored data pages and log records for database recovery
Application Number
7/179194
Publication Number
5043866
Application Date
April 8, 1988
Publication Date
August 27, 1991
Inventor
Cheng Fong Shih
Austin
TX, US
William W Myre Jr
Austin
TX, US
Agent
Robert M Carwell
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 12/08
G06F 9/312
G06F 11/30
View Original Source