﻿<?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-Decode360's Blog-随笔分类-10.DB_Tools</title><link>http://www.blogjava.net/decode360/category/40464.html</link><description>业精于勤而荒于嬉    QQ:150355677    MSN:decode360@hotmail.com</description><language>zh-cn</language><lastBuildDate>Thu, 27 Aug 2009 07:33:49 GMT</lastBuildDate><pubDate>Thu, 27 Aug 2009 07:33:49 GMT</pubDate><ttl>60</ttl><item><title>show_space</title><link>http://www.blogjava.net/decode360/archive/2009/07/11/287764.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Sat, 11 Jul 2009 13:18:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/07/11/287764.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/287764.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/07/11/287764.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/287764.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/287764.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: Tom的show_space备份一下。非常有用！！！&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/07/11/287764.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/287764.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-07-11 21:18 <a href="http://www.blogjava.net/decode360/archive/2009/07/11/287764.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Wrap加密Oracle存储过程</title><link>http://www.blogjava.net/decode360/archive/2009/06/28/287750.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Sun, 28 Jun 2009 13:09:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/06/28/287750.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/287750.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/06/28/287750.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/287750.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/287750.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: Oracle自带的内部包大多数都是经过加密的，比较好奇，了解一下Oracle进行加密的工具。一般都使用wrap工具进行加密，这个wrap的使用语法非常简单，只有输入和输出两个参数，也没有多余的操作。但是也没有详细的错误提示，所以很多问题出现后很难查到原因。简单看看，记录一下这个工具的用法，以便今后查询。&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/06/28/287750.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/287750.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-06-28 21:09 <a href="http://www.blogjava.net/decode360/archive/2009/06/28/287750.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Oracle imp和exp的使用</title><link>http://www.blogjava.net/decode360/archive/2009/06/22/287744.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Mon, 22 Jun 2009 12:32:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/06/22/287744.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/287744.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/06/22/287744.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/287744.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/287744.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 入行太晚，没接触过早期的Oracle版本，所以一直都是用PLSQL Developer做数据的exp和imp。现在要写定制脚本了才发现，自己居然对命令行模式下的这两个命令很不了解，于是只要再来学一遍基础。了解了一遍之后发现这两个工具的有些细节还是很值得注意一下的，下面看一下详细的用法：&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/06/22/287744.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/287744.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-06-22 20:32 <a href="http://www.blogjava.net/decode360/archive/2009/06/22/287744.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>修改DBNAME</title><link>http://www.blogjava.net/decode360/archive/2009/06/20/287742.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Sat, 20 Jun 2009 15:19:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/06/20/287742.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/287742.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/06/20/287742.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/287742.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/287742.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 最近通过VMware硬盘的直接复制来创建结点，需要修改DBID和DBNAME(保证数据库环境可用)，找了找可以用来直接修改DBNAME的方法，还真有，原来Oracle本身就自带了这个功能的工具(NID)，用了一下发现使用还是比较方便的，但是更改之后问题多多，使用的最终结论还是：不到万不得已不推荐使用，因为DBID涉及到的关联很多，修改SID后会引发很多不可预知的错误，很多参数都任然沿用之间的%SID%，如果没有非常特殊的要求，还是保留datafile后，删除重建。讲一下具体的操作过程：&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/06/20/287742.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/287742.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-06-20 23:19 <a href="http://www.blogjava.net/decode360/archive/2009/06/20/287742.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>用Trigger为MView手动增加时间戳</title><link>http://www.blogjava.net/decode360/archive/2009/06/18/287737.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Thu, 18 Jun 2009 13:54:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/06/18/287737.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/287737.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/06/18/287737.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/287737.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/287737.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 很多人都遇到过这样的问题：源数据库里的表没有时间戳，或者有时间戳的字段但没有严格执行，而历史数据又可能会经常性得被修改。这对于ETL数据抽取来说将是一个很大的问题，特别是对于不能动源库的情况下，很难解决这个问题。最近又因为这个问题，考虑了很久，最后打算在MView同步数据的基础上，通过Trigger来手动增加时间戳。&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/06/18/287737.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/287737.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-06-18 21:54 <a href="http://www.blogjava.net/decode360/archive/2009/06/18/287737.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Oracle 10g CDC</title><link>http://www.blogjava.net/decode360/archive/2009/06/15/287733.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Mon, 15 Jun 2009 11:49:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/06/15/287733.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/287733.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/06/15/287733.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/287733.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/287733.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 从Oracle9i开始，Oracle引入了CDC技术来实现对变化数据的捕获。在Oracle9i中CDC只支持同步的数据捕获(synchronous change capture)，源数据的变化被实时的捕获，捕获的过程和源数据是同一个事务。它的实现需要源数据支持trigger，所以这种同步的技术会给数据源带来性能的问题。这是CDC在Oracle9i的一个缺陷(在Oracle10g中已经改进)。&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/06/15/287733.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/287733.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-06-15 19:49 <a href="http://www.blogjava.net/decode360/archive/2009/06/15/287733.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Oracle诊断工具-RDA</title><link>http://www.blogjava.net/decode360/archive/2009/06/13/282881.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Sat, 13 Jun 2009 13:08:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/06/13/282881.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/282881.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/06/13/282881.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/282881.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/282881.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: RDA是Remote Diagnostic Agent 的简称，是Oracle用来收集、分析数据库的工具，运行该工具不会改变系统的任何参数，RDA收集的相关数据非常全面，可以简化我们日常监控、分析数据库的工作。&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/06/13/282881.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/282881.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-06-13 21:08 <a href="http://www.blogjava.net/decode360/archive/2009/06/13/282881.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>TKPROF使用实例</title><link>http://www.blogjava.net/decode360/archive/2009/04/12/292664.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Sun, 12 Apr 2009 14:38:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/04/12/292664.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/292664.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/04/12/292664.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/292664.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/292664.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 借Tom这篇用来说明别的问题的文章来学习一下TKPROF的用法。&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/04/12/292664.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/292664.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-04-12 22:38 <a href="http://www.blogjava.net/decode360/archive/2009/04/12/292664.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>TKPROF使用学习</title><link>http://www.blogjava.net/decode360/archive/2009/04/11/292663.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Sat, 11 Apr 2009 14:05:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/04/11/292663.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/292663.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/04/11/292663.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/292663.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/292663.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: Tkprof工具可用来格式化sql trace产生的文件，让你更容易看懂trace的内容<br>&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/04/11/292663.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/292663.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-04-11 22:05 <a href="http://www.blogjava.net/decode360/archive/2009/04/11/292663.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>run_stats</title><link>http://www.blogjava.net/decode360/archive/2009/04/07/292661.html</link><dc:creator>decode360</dc:creator><author>decode360</author><pubDate>Tue, 07 Apr 2009 15:04:00 GMT</pubDate><guid>http://www.blogjava.net/decode360/archive/2009/04/07/292661.html</guid><wfw:comment>http://www.blogjava.net/decode360/comments/292661.html</wfw:comment><comments>http://www.blogjava.net/decode360/archive/2009/04/07/292661.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/decode360/comments/commentRss/292661.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/decode360/services/trackbacks/292661.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: Tom的一个比较SQL性能的小工具，就是在《9i10g编程艺术》里面第一章放的工具，今天重新看了一下，发现还是挺有用的，贴上来以后SQL tuning中可以使用一下。<br>&nbsp;&nbsp;<a href='http://www.blogjava.net/decode360/archive/2009/04/07/292661.html'>阅读全文</a><img src ="http://www.blogjava.net/decode360/aggbug/292661.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/decode360/" target="_blank">decode360</a> 2009-04-07 23:04 <a href="http://www.blogjava.net/decode360/archive/2009/04/07/292661.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>