About ORACLE CPU, PSU, SPU Patch Nomenclature
It all started in January 2005 with Critical Patch Updates (CPU). Then Patch Set Updates (PSU) were added as cumulative patches that included priority fixes as well as security fixes.
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It all started in January 2005 with Critical Patch Updates (CPU). Then Patch Set Updates (PSU) were added as cumulative patches that included priority fixes as well as security fixes.
One of the database users accidentally deleted all the rows of a critical table and committed the delete at 1:30 p.m. …
近几年新名词层出不穷,概念这玩意忽悠客户的东西有时也会把搞技术的打懵,有概念出新没错,没概念就没技术嘛,(只能说有了技术没法形容也没人知道)
总体就是说Oracle Outline是用来保持SQL执行计划(execution plan)的一个工具。我们可以保存一个时间点的执行计划,用于数据改变或系统环境改变而限制cbo,rbo强行执行原保存的执行计划,注意的是,这个执行计划现在适用随着数据的变化明天不一定是最好的。
oracle sg这几本书里的概念的东西写的很细,对于考试的朋友很有帮助,对于英文差的可能又不吸收,现在把中文的分享一下。
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