目录 RealSync 数据库异构复制热
容灾解决方案
目录
1 概述......................................................................................................4
1.1 数据流通效率低下,企业信息孤岛现象严重..............................................4
1.2 数据报表、查询和数据共享效率低下.........................................................4
1.3 数据容灾级别提升......................................................................................4
1.4 企业需要新的信息架构...............................................................................5
2 RealSync 软件模块..............................................................................5
2.1 RealSync for Production Server.................................................................6
2.2 RealSync for Destination Server.................................................................6
2.3 RealSync management console.................................................................6
3 RealSync 工作原理..............................................................................7
3.1 日志抓取.....................................................................................................7
3.2 日志分析.....................................................................................................8
3.3 交易合成.....................................................................................................8
3.4 交易传输.....................................................................................................9
3.5 数据装载...................................................................................................10
3.5.1 采用 DXF 数据格式的装载..............................................................10
3.5.2 采用 Mapping 方式快速定位...........................................................11
3.6 OPS/RAC 的支持......................................................................................11
3.7 数据完整性保证........................................................................................12
3.8 数据初始化装载........................................................................................13
3.8.1 首次批量数据装载..........................................................................13
3.8.2 增量数据装载.................................................................................13
3.9 其他数据初始化技术.................................................................................14
3.10 ROWID 回传技术....................................................................................14
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