Method and system for controlling recovery downtime by maintaining a checkpoint value
US6678704B1 · kind B1 · utility
55Cited by
15References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Apr 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.