该文提出并实现了一种远程应用级数据库容灾系统。该系统支持多种灾难备份及恢复策略,可实时地将本地数据库的数据及相关操作同步到远程备用数据库中,保证两地数据的一致性。当本地主数据库发生故障时,可迅速切换数据库服务到远程备用数据库。
A remote application layer disaster recovery system for database has been presented.The system supports a variety of disaster backup and recovery strategy,which synchronizes local database data and correlated operation to long-distance standby database in real-time,for ensuring the data consistency.When disaster happens to local primary database,service can be drifted from the local to the remote standby database quickly.