Method for mirroring a log file by threshold driven synchronization
US8266107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2009 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Mar 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for of accelerating database log hardening using specific per block data protection and damage control is provided. A per write specification is implemented to determine when database log data is mirrored synchronously or asynchronously. Synchronous mirroring is performed upon reaching a predetermined threshold, based on one or more parameters such as transaction value, both individual and cumulative, and the quantity of data written since the last synchronous mirroring. As data is added to the database log, it is written specifying asynchronous mirroring to the primary log file. Once a threshold is met, a write specifying synchronous mirroring is performed to both the primary and secondary log files, thereby hardening the log file in both primary and secondary storage subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.