摘要:
The single mostimportant feature of Oracle is one that first appeared in version 6: the changevector, a mechanism for describing changes to data blocks, the heart of redoand undo. --对于Oracle来说,最具有革命性的新特性莫过于Oracle 6时出现的改变向量(changevector);改变向量:即描述数据块更改的信息, change vector 也是redo 和undo的核心。This is thetec. 阅读全文
摘要:
The single mostimportant feature of Oracle is one that first appeared in version 6: the changevector, a mechanism for describing changes to data blocks, the heart of redoand undo. --对于Oracle来说,最具有革命性的新特性莫过于Oracle 6时出现的改变向量(changevector);改变向量:即描述数据块更改的信息, change vector 也是redo 和undo的核心。This is thetec. 阅读全文