Data prefetching method
US6996680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2003 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Jul 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A prefetching program preliminarily executes acquisition of SQL statements which are executed repeatedly and an analysis of a content of such processing so as to grasp data to be fetched in advance. Immediately before executing the processing, starting of the processing is notified to the prefetching program. Based on a preliminary analysis result and a given cache amount, the prefetching program issues a setting of the cache amount and an instruction of a data prefetching method to a DBMS and a storage device. The prefetching program receives a report on completion of the processing and, thereafter, issues a request for releasing a cache allocated for the processing to the DBNS and other storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.