Method and system for controlling recovery downtime

Details Method and system for controlling recovery downtime Method and system for controlling recovery downtime

2004-01-02

2009-12-29

Fleurantin, Jean B (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C714S019000

Reexamination Certificate

active

07640275

ABSTRACT:
A method and system for reducing overhead associated with recovering after a failure. According to the method, a checkpoint value is maintained that indicates which records of a plurality of records have to be processed after the failure. The plurality of records contain change information that corresponds to a plurality of data blocks. A target checkpoint value is determined based on a desired number of data block reads that will be required during a redo phase of recovery. Changes contained in volatile memory are then written to nonvolatile memory to advance the checkpoint value to at least the target checkpoint value.

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