<?xml version="1.0" encoding="gbk"?>
			<?xml-stylesheet type="text/css" href="http://space.itpub.net/css/rss.css"?>
			<rss version="2.0">
			  <channel>
			    <title>star_guan2008的个人空间</title>
			    <link>http://space.itpub.net/10742223</link>
			    <description></description>
			    <copyright>Copyright(C) star_guan2008的个人空间</copyright>
			    <generator>SupeSite/X-Space</generator>
			    <lastBuildDate>Sat, 22 Nov 2008 07:52:30 GMT</lastBuildDate><item>
								<title>INSERT  ALL 和INSERT FIRST 的区别</title>
								<link>http://space.itpub.net/10742223/viewspace-448312</link>
								<description><![CDATA[all应该好理解,first即使条件中记录有交集,数据也是不会有的,从第一个条件开始取数,剩下的数据再和下面的条件进行依次匹配<BR>
<DIV class=t_msgfont id=message11552962>SQL&gt; create table tmp(col1 number);<BR><BR>表已创建。<BR><BR>SQL&gt; create table tmp1(co...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Sun, 14 Sep 2008 10:27:37 GMT</pubDate>
							</item>
							<item>
								<title>丢失临时文件</title>
								<link>http://space.itpub.net/10742223/viewspace-401218</link>
								<description><![CDATA[<P>C:\Documents and Settings\guanxg&gt;sqlplus xg_test/xg_test</P>
<P>SQL*Plus: Release 10.2.0.1.0 - Production on 星期一 7月 14 17:40:38 2008</P>
<P>Copyright (c) 1982, 2005, Oracle.&nbsp; All rights reserved.</P>
<P><BR>连接到:<BR>Oracle Database ...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 14 Jul 2008 17:54:20 GMT</pubDate>
							</item>
							<item>
								<title>DDL会提交事务,但,失败的DDL是否也会提交事务呢?</title>
								<link>http://space.itpub.net/10742223/viewspace-401181</link>
								<description><![CDATA[SQL&gt; select * from test;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 14 Jul 2008 13:53:25 GMT</pubDate>
							</item>
							<item>
								<title>Oracle表段中的高水位线HWM</title>
								<link>http://space.itpub.net/10742223/viewspace-400074</link>
								<description><![CDATA[<DIV class=storytext><FONT size=4><SPAN style="FONT-FAMILY: 宋体">在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Oracle</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体">数据的存储中，可以把存储空间想象为一个水库，数据想象为水库中的水。水库中的水的位...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 14 Jul 2008 10:46:29 GMT</pubDate>
							</item>
							<item>
								<title>startup和shutdown</title>
								<link>http://space.itpub.net/10742223/viewspace-400060</link>
								<description><![CDATA[<DIV class=t_msgfont id=message5341115>SHUTDOWN有四个参数：NORMAL、TRANSACTIONAL、IMMEDIATE、ABORT。缺省不带任何参数时表示是NORMAL。 <BR>SHUTDOWN NORMAL：不允许新的连接、等待会话结束、等待事务结束、做一个检查点并关闭数据文件。启动时不需要实例恢复。 <BR...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 14 Jul 2008 09:46:29 GMT</pubDate>
							</item>
							<item>
								<title>小议如果构造数组</title>
								<link>http://space.itpub.net/10742223/viewspace-374869</link>
								<description><![CDATA[<P>1、一维数组<BR>SQL&gt; set serveroutput on<BR>SQL&gt; <BR>SQL&gt; declare<BR>&nbsp; 2&nbsp;&nbsp;&nbsp; type tvar_sz is varray(5) of number;<BR>&nbsp; 3&nbsp;&nbsp;&nbsp; var_sz tvar_sz;<BR>&nbsp; 4&nbsp; begin<BR>&nbsp; 5&nbsp;&nbsp;&nbsp; var_sz :...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Thu, 10 Jul 2008 09:40:54 GMT</pubDate>
							</item>
							<item>
								<title>如何阅读本地管理表空间的位图块信息- -</title>
								<link>http://space.itpub.net/10742223/viewspace-374748</link>
								<description><![CDATA[<SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: " roman??="" new="" ?times="" mso-hansi-font-family:="" roman?;="" times=""><FONT size=3>创建一个本地管理表空间</FONT></SPAN>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT ...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Wed, 09 Jul 2008 14:41:11 GMT</pubDate>
							</item>
							<item>
								<title>OLTP和OLAP的区别</title>
								<link>http://space.itpub.net/10742223/viewspace-374527</link>
								<description><![CDATA[<FONT face=Georgia size=2>OLTP是传统的关系型数据库的主要应用，主要是基本的、日常的事务处理，例如银行交易。OLAP是数据仓库系统的主要应用，支持复杂的分析操作，侧重决策支持，并且提供直观易懂的查询结果。下表列出了OLTP与OLAP之间的比较。</FONT> 
<DIV align=l...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Tue, 08 Jul 2008 14:41:16 GMT</pubDate>
							</item>
							<item>
								<title>CURSOR</title>
								<link>http://space.itpub.net/10742223/viewspace-374405</link>
								<description><![CDATA[<FONT face=宋体>继续我们的旅程，今天简单的总结一下PL/SQL中cursor(光标/游标)的用法.</FONT> 
<P style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; LINE-HEIGHT: 150%"><FONT color=#000000><FONT face=宋体>相信不少做开发或维护的DBA在找工作的时候，遇到过类似的面视问...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 07 Jul 2008 18:23:37 GMT</pubDate>
							</item>
							<item>
								<title>Oracle EVENT用法参考列表</title>
								<link>http://space.itpub.net/10742223/viewspace-369149</link>
								<description><![CDATA[<TABLE style="WIDTH: 440pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=586 border=0>
<TBODY>
<TR style="HEIGHT: 14.25pt" height=19>
<TD style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; FONT-WEIGHT: 700; ...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Fri, 04 Jul 2008 10:54:27 GMT</pubDate>
							</item>
							<item>
								<title>logminer不完整版</title>
								<link>http://space.itpub.net/10742223/viewspace-369049</link>
								<description><![CDATA[<P><A href="mailto:sys@WX">sys@WX</A>&gt; alter system set utl_file_dir='d:\backup\logminer' scope=spfile;</P>
<P>系统已更改。</P>
<P><A href="mailto:sys@WX">sys@WX</A>&gt; shutdown immediate;<BR>数据库已经关闭。<BR>已经卸载数据库。<BR>ORACLE 例程已经...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Thu, 03 Jul 2008 16:03:00 GMT</pubDate>
							</item>
							<item>
								<title>备用数据库</title>
								<link>http://space.itpub.net/10742223/viewspace-368765</link>
								<description><![CDATA[<P><STRONG>C:\Documents and Settings\guanxg&gt;d:</STRONG></P>
<P><STRONG>D:\&gt;cd oraclestandby</STRONG></P>
<P><STRONG>D:\oraclestandby&gt;md admin</STRONG></P>
<P><STRONG>D:\oraclestandby&gt;md standby</STRONG></P>
<P><STRONG>D:\oraclestandby&g...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Tue, 01 Jul 2008 15:18:52 GMT</pubDate>
							</item>
							<item>
								<title>Oracle SCN机制解析</title>
								<link>http://space.itpub.net/10742223/viewspace-367590</link>
								<description><![CDATA[<P class=MsoNormal style="TEXT-INDENT: 0.25in"><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: 宋体">SCN<SPAN lang=ZH-CN>（</SPAN>System Chang Number<SPAN lang=ZH-CN>）作为</SPAN>oracle<SPAN lang=ZH-CN>中的一个重要机制，在数据恢复、</SPAN>Data Guard<SPAN la...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Tue, 01 Jul 2008 09:13:55 GMT</pubDate>
							</item>
							<item>
								<title>手动复制数据库</title>
								<link>http://space.itpub.net/10742223/viewspace-366468</link>
								<description><![CDATA[<P>C:\Documents and Settings\guanxg&gt;d:</P>
<P>D:\&gt;cd oraclebuk</P>
<P>D:\oraclebuk&gt;md admin</P>
<P>D:\oraclebuk&gt;cd admin</P>
<P>D:\oraclebuk\admin&gt;md clne</P>
<P>D:\oraclebuk\admin&gt;cd clne</P>
<P>D:\oraclebuk\admin\clne&gt;md ad...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 30 Jun 2008 18:07:47 GMT</pubDate>
							</item>
							<item>
								<title>Oracle分页查询格式</title>
								<link>http://space.itpub.net/10742223/viewspace-365972</link>
								<description><![CDATA[看看杨版主的总结。<BR>&nbsp; &nbsp;Oracle分页查询格式（一）：<A href="http://yangtingkun.itpub.net/post/468/100278" target=_blank>http://yangtingkun.itpub.net/post/468/100278</A><BR>&nbsp; &nbsp;Oracle分页查询格式（二）：<A href="http://yangtingkun.itp...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Thu, 26 Jun 2008 09:52:08 GMT</pubDate>
							</item>
							<item>
								<title>DBA 面试题目</title>
								<link>http://space.itpub.net/10742223/viewspace-364854</link>
								<description><![CDATA[<P>技术方面</P>
<P>1. 解释冷备份和热备份的不同点以及各自的优点</P>
<P>　　解答：热备份针对归档模式的数据库，在数据库仍旧处于工作状态时进行备份。而冷备份指在数据库关闭后，进行备份，适用于所有模式的数据库。热备份的优点在于当备份时，数据库仍旧可以被使用...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Wed, 25 Jun 2008 18:16:18 GMT</pubDate>
							</item>
							<item>
								<title>10046 trace</title>
								<link>http://space.itpub.net/10742223/viewspace-364853</link>
								<description><![CDATA[我在日常工作中经常需要用10046跟踪一些进程，为了方便，写了一个可以方便查看trace的小脚本。<BR>begin_trace:<BR>---------------------------------------------------------<BR>-- run in SQL*Plus --<BR><BR>set termout off<BR>set heading off<BR>set verify off<B...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Wed, 25 Jun 2008 18:12:42 GMT</pubDate>
							</item>
							<item>
								<title>RMAN基本操作代码</title>
								<link>http://space.itpub.net/10742223/viewspace-364838</link>
								<description><![CDATA[LINUX&gt;&nbsp;&nbsp; &nbsp;rman<BR>RMAN&gt;&nbsp;&nbsp; &nbsp;connect target /<BR>RMAN&gt;&nbsp;&nbsp; &nbsp;connect catalog rman/rman@rmandb;<BR>RMAN&gt;&nbsp;&nbsp; &nbsp;create catalog tablespace rman_data;<BR>RMAN&gt;&nbsp;&nbsp; &nbsp;register da...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Wed, 25 Jun 2008 17:11:15 GMT</pubDate>
							</item>
							<item>
								<title>Oracle中，一个Delete操作的流程</title>
								<link>http://space.itpub.net/10742223/viewspace-351957</link>
								<description><![CDATA[<P>Oracle中，一个Delete操作的流程</P>
<P>删除(DELETE)</P>
<P>1.Oracle读Block到Buffer Cache(如果该Block在Buffer中不存在)<BR>2.在redo log buffer中记录delete操作的细节<BR>3.在相应回滚段段头的事务表中创建一个undo条目<BR>4.把将要删除的记录创建前镜像,存放到...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Fri, 20 Jun 2008 12:53:37 GMT</pubDate>
							</item>
							<item>
								<title>EXPDP和IMPDP的使用</title>
								<link>http://space.itpub.net/10742223/viewspace-351931</link>
								<description><![CDATA[<P>1、create directory dump_dir as 'D:\backup';<BR>2、<A href="mailto:xg_test@WX">xg_test@WX</A>&gt; select * from dba_directories;<BR>3、<A href="mailto:xg_test@WX">xg_test@WX</A>&gt; GRANT READ,WRITE ON DIRECTORY dump_dir to geobase;<BR>4、C:\Documen...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Fri, 20 Jun 2008 09:22:56 GMT</pubDate>
							</item>
							<item>
								<title>Shared Pool与Processes参数的关系</title>
								<link>http://space.itpub.net/10742223/viewspace-351823</link>
								<description><![CDATA[<P>大家都知道，我们使用ORACLE数据库时，常常会为实例配置一个processes参数，此参数故名思意，就是设置整个数据库系统可以启动多少个进程(包括系统自己的后台进程)<BR>设置不合理的processes参数值，会导致实例无法启动。此参数还有其它许许多多的含义和作用，影响着数据...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Thu, 19 Jun 2008 09:34:00 GMT</pubDate>
							</item>
							<item>
								<title>启用Block Change Tracking-10g新特性</title>
								<link>http://space.itpub.net/10742223/viewspace-351755</link>
								<description><![CDATA[Block chage tracking是Oracle10g的一个新特性，Block change tracking进程记录自从上一次备份以来数据块的变化，并把这些信息记录在跟踪文件中。RMAN使用这个文件判断增量备份中需要备份的变更数据。这极大的促进了备份性能，RMAN可以不再扫描整个文件以查找变更数据。<B...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Wed, 18 Jun 2008 16:31:37 GMT</pubDate>
							</item>
							<item>
								<title>使用dbv和RMAN检查数据文件中的坏块</title>
								<link>http://space.itpub.net/10742223/viewspace-350598</link>
								<description><![CDATA[<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=2><SPAN lang=EN-US>1.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使用...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Wed, 18 Jun 2008 09:29:45 GMT</pubDate>
							</item>
							<item>
								<title>FTP命令大全</title>
								<link>http://space.itpub.net/10742223/viewspace-349428</link>
								<description><![CDATA[大量的FTP内部命令，常常让人头昏眼花。对于熟悉的人倒还好一点，如果是才接触到的朋友，就会非常的头疼了。我们在这里为大家整理了一些FTP的内部命令，方便大家查阅。
<P>&nbsp;&nbsp;&nbsp; c FTP的命令行格式为： ftp -v -d -i -n -g [主机名] ，其中&nbsp; </P>
<P>...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Tue, 17 Jun 2008 11:10:26 GMT</pubDate>
							</item>
							<item>
								<title>回滚操作、回滚段的理解</title>
								<link>http://space.itpub.net/10742223/viewspace-349391</link>
								<description><![CDATA[<P>回滚操作：</P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">oracle</SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 16 Jun 2008 17:59:42 GMT</pubDate>
							</item>
							<item>
								<title>Oracle中共享连接和专用连接对比分析</title>
								<link>http://space.itpub.net/10742223/viewspace-349385</link>
								<description><![CDATA[　在专用连接方式中，每一个连接到数据库服务器的客户端请求，服务器会和客户端之间建立起连接，这个连接用于专门处理该客户端的所有请求，直到用户主动断开连接或网络出现中断。在连接处于空闲时，后台进程PMON会每隔一段时间，就会测试用户连接状况，如果连接已断开，PM...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Mon, 16 Jun 2008 17:36:03 GMT</pubDate>
							</item>
							<item>
								<title>如何删除归档日志文件</title>
								<link>http://space.itpub.net/10742223/viewspace-345714</link>
								<description><![CDATA[我们都都知道在controlfile中记录着每一个archivelog的相关信息，当然们在OS下把这些物理文件delete掉后，在我们的<BR>controlfile中仍然记录着这些archivelog的信息，在oracle的OEM管理器中有可视化的日志展现出，当我们手工清除archive目录下的文件后，这些记录并没有被...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Fri, 13 Jun 2008 18:35:42 GMT</pubDate>
							</item>
							<item>
								<title>a pretty simple philosophy</title>
								<link>http://space.itpub.net/10742223/viewspace-345681</link>
								<description><![CDATA[&#8226; You should do it in a single SQL statement if at all possible.<BR>&#8226; If you cannot do it in a single SQL statement, then do it in PL/SQL (but as little PL/SQL<BR>as possible!).<BR>&#8226; If you cannot do it in PL/SQL (due to some missing ...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Fri, 13 Jun 2008 13:37:54 GMT</pubDate>
							</item>
							<item>
								<title>在Oracle中'aa '='aa'吗?</title>
								<link>http://space.itpub.net/10742223/viewspace-344558</link>
								<description><![CDATA[SQL&gt; select 1 from dual where dump('aa ')=dump('aa');<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1<BR>----------<BR>&nbsp;<BR>SQL&gt; select 1 from dual where 'aa '='aa';<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Thu, 12 Jun 2008 18:53:56 GMT</pubDate>
							</item>
							<item>
								<title>PCTFREE和PCTUSED的概念</title>
								<link>http://space.itpub.net/10742223/viewspace-344529</link>
								<description><![CDATA[PCTFREE存储参数告诉ORACLE什么时候应该将数据块从对象的空闲列表中移出。ORACLE的默认参数是PCTFREE=10；也就是说，一旦一个INSERT操作使得数据块的90%被使用，这个数据块就从空闲列表(free list)中移出。 PCTUSED存储参数告诉ORACLE什么时候将以前满的数据块加到空闲列表...]]></description>
								<category>blog</category>
								<author>star_guan2008</author>
								<pubDate>Thu, 12 Jun 2008 15:30:39 GMT</pubDate>
							</item>
							
		</channel>
	</rss>