摘要
在分布事务处理中，为了保持事务执行的原子性、一致性、隔离性和持久性，一般采用两阶段提交协议进行实现。在实际的系统中，两阶段提交协议通常采用集中式通信结构进行实现。当承担事务的站点出现故障或网络出现通信故障时，一些事务就不能正确的提交或撤销，就会导致事务处理的阻塞现象，从而影响系统资源的利用效率。针对这种现象，此文提出了一个改进的类分层式的通信结构。这种通信结构可以更好的保证分布式事务提交的原子性、一致性、隔离性和耐久性，提高系统资源的利用效率。
The two -phase commitment protocol is widely atomicity, consisency, isolaty, durability of the transaction disposal applied in the transcation . In the practical system, disposal for ensuring two - phase com- mitment protocol generally implements with centralized communication structure. But some affairs could not be correctly submitted or cancelled when there are site malfunctions or network appear communication fault, this will cause the blockages, thereby affecting the level of system resources utilization. To resolve this shortcoming, this paper presents improved program in communcation structure. This communication structure can better guarantee the atomicity, consistency, isolation and durability of distributed transaction commits, improves the level of system resources utilization.
出处
《信息技术与信息化》
2011年第2期72-75,共4页
Information Technology and Informatization
关键词
分布式数据库
两阶段提交协议
阻塞
通信结构
事务
Distributed database system Two -phase commit protocol Blocking Communication structure Transaction
