多版本两阶段封锁并发控制协议性能研究  

Research of the Performances of Multiversional Two-Phase Locking Concurrency Control Protocols

作　　者：雷向东[1] 袁晓莉[1] 

机构地区：[1]中南大学信息工程学院,湖南长沙410083

出　　处：《计算机工程与科学》2003年第4期46-49,共4页Computer Engineering & Science

基　　金：国家863计划资助项目(511-910-092)

摘　　要：在并行实时数据库中,并发控制协议不仅要满足数据库一致性约束,而且要满足时间约束。本文提出了实时多版本两阶段封锁并发控制协议,它能有效地减少延误截止时间事务数量。作者通过仿真模拟,在共享磁盘体系结构下与HP2PL和OCC TI WAIT 50协议进行了比较。实验结果表明,该协议比HP2PL和OCC TI WAIT 50协议性能更好。In parallel realtime database systems, concurrency control protocols must not only maintain the consistency constraints, but also meet time constraints. The article presents a multiversional twophase locking concurrency control protocol. It can effectively reduce the number of transactions that miss their deadlines. We compare the protocol presented with the HP2PL protocol and the OCCTIWAIT50 protocol under the shareddisk architecture by simulation. The experimental results show that the protocol performs better than the other two.

关 键 词：并行数据库系统 实时数据库 并发控制协议 多版本两阶段封锁协议 事务处理 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]