yangdm_qm 发表于 2011-10-17 14:55

几种集群方式区别

集群方式AA和oralce 的rac模式，两种区别是什么？

可以认为两个节点的rac就是AA模式嘛？

AA模式是同时对外提供服务？可以同时读写存储？

等待高手回答，十分感谢！

briangao 发表于 2011-10-18 03:26

There are two type of clusters, one is active-passive and one is active-active. Oracle RAC belongs to active-active configuration. Since both nodes are active, it requires coordination to avoid potential data corruption. Oracle RAC treats the memory of both nodes as if there were one. Before RAC, Oracle had OPS, which used disks for coordination. For certain applications which requre updates to database from both nodes, OPS could become extremely slow if you don't configure it right (such as data or function partitioning).

财版 发表于 2011-10-18 09:26

2L解释很清楚AA和AP两种:em27:

waily 发表于 2011-10-19 11:13

领教了！
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