﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>BlogJava-PhoenixLi-文章分类-数据库&amp;Oracle</title><link>http://www.blogjava.net/lihao336/category/41268.html</link><description>成于坚忍，毁于浮躁</description><language>zh-cn</language><lastBuildDate>Mon, 31 Aug 2009 08:34:27 GMT</lastBuildDate><pubDate>Mon, 31 Aug 2009 08:34:27 GMT</pubDate><ttl>60</ttl><item><title>Oracle SQL优化</title><link>http://www.blogjava.net/lihao336/articles/290858.html</link><dc:creator>PhoenixLi</dc:creator><author>PhoenixLi</author><pubDate>Wed, 12 Aug 2009 08:53:00 GMT</pubDate><guid>http://www.blogjava.net/lihao336/articles/290858.html</guid><wfw:comment>http://www.blogjava.net/lihao336/comments/290858.html</wfw:comment><comments>http://www.blogjava.net/lihao336/articles/290858.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/lihao336/comments/commentRss/290858.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/lihao336/services/trackbacks/290858.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: &nbsp; Oracle SQL优化1. 选用适合的ORACLE优化器&nbsp;ORACLE的优化器共有3种: &nbsp;a.&nbsp;RULE (基于规则)&nbsp;&nbsp;b. COST (基于成本) &nbsp;c. CHOOSE (选择性) 设置缺省的优化器,可以通过对init.ora文件中OPTIMIZER_MODE参数的各种声明,如RULE,C...&nbsp;&nbsp;<a href='http://www.blogjava.net/lihao336/articles/290858.html'>阅读全文</a><img src ="http://www.blogjava.net/lihao336/aggbug/290858.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/lihao336/" target="_blank">PhoenixLi</a> 2009-08-12 16:53 <a href="http://www.blogjava.net/lihao336/articles/290858.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>