A Technique for On-Line Data Migration
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概要
- 論文の詳細を見る
In recent years, more emphasis is placed on the performance of massive databases. It is often required not only that database systems provide high throughputs with rapid response times, but also that they are fully available 24-hours-per-day and 7-days-per-week. Requirements for throughput and response time can be satisfied by upgrading the hardware. As a result, databases in the old hardware environment have to be moved to the new one. Moving a database, however, generally requires taking the database off line for a lomg time, which is unacceptable for unmerous applications. In this paper, a very practical and important subject is addressed: how to upgrade the hardware on line, I.e., how to move a database from an old hardware environment to a new one concuuently with users' reading and writing of the database. A technique for this purpose is proposed. We have implemented a prototype based on this technique. Our experiments with the protptype shown that compared with conventional off-line approach, the proposed technique could give a performance improvement by more than 85% in the query-bound environment and 40% in the updata-bound environment.
- 社団法人電子情報通信学会の論文
- 2001-01-01
著者
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Wang Jiahong
The Authors Are With The Faculty Of Softwave And Information Science Iwate Prefectural University
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MIYAZAKI Masatoshi
The authors are with the Faculty of Softwave and Information Science, Iwate Prefectural University,
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LI Jie
The suthor is with the Institute of Information Sciences and Electronics, University of Tsukuba,
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Li Jie
The Suthor Is With The Institute Of Information Sciences And Electronics University Of Tsukuba
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Miyazaki Masatoshi
The Authors Are With The Faculty Of Softwave And Information Science Iwate Prefectural University