DDBM S的两阶段提交协议中阻塞问题的解决方案.PDF

第 23卷第 5期 计算机应用与软件 Vol23, No. 5 2006年 5月 Computer Applications and Sofwt are M ay 2006 DDBM S 熊燕群 白似雪 ( 33002 ) 传统的两阶段提交协议在分布式数据库管理系统的事务处理中得 广泛运用, 较好地保证了分布事务的一致性和数据 的一致性然而, 这 个协议会出现阻塞问题, 严重影响系统资源的利用率针对这 个弱点从事务的分类处理快照技术通信结构 终结协议等方面进行探讨, 提出五种解决方案, 并且分析了这些方案的适用场合 两阶段提交 分布式数据库管理系统 事务 阻塞 快照 SOLUTIONS TO THE BLOCKING PROBLEM IN TWOPHASE COMM ITMENT OF DISTRIBUTED DATABASEMANAGEMENT SYSTEM X iong Y anqun Bai Sixue (D ep artm ent of Comp uterApp lication Technology, Nanchang University, Nanchang Jiangxi 33002 , China) Abstract The traditional wt ophase comm itm en t protocol isw idely applied in the transaction disposal of D istributed DatabaseM anagem ent System. It assures the cons istency of d istributed transactions and data. H owever, this protocol may cause block ing problem. It w ill bad ly influ ence the using efficiency of system resources. This paper ami s at that w eakness and d iscusses on these aspects, such as transactions sorting d isposal, snapshot technology, communication structure, finality protocol and so on. It puts forw ard five solutions to the problem and analyses their ow n app lied occasions. K eywor s Tw ophase comm itm ent D istributed databasem anagem ent system Transaction B lock ing Snapshot 1 3 , 3. 1 , , ! , , , , : , , , , , ? , : , , , , , , ,