开始在自己的网站上发布自己的东西了，可以好好的总结下学习的东西，也好与大家一起分享和讨论，欢迎大家提出宝贵意见
Crontab Format and Editor
作者:admin 日期:2009-06-28
Crontab Format and Editor
The system adminstrator will use contrab to run the timing job, a little difference between different system.
crontab format
# r—-minute (0-59) -1 = each (*)
# | r—–hour (0-23) 25 for disable
# | | r——day of the month (1-31)
# | | | r——month (1-12)
# | | | | r——day of the week (1-7 monday=1)
# | | | | | r—— command to run ————->
# | | | | | |
# | | | | | |
eg.
every mondy morning 3:25 run the scripts backup_everyweek.sh
25 3 * * 1 /root/shell/backup_datebase.sh
We also can use this line command to run the command every 5 minutes
0,5,10,15,20,25,30,35,40,45,50,55 * * * * command
There is a little difference between Solaris and Linux, we can use */5 to run the command every 5 minutes, and */20 represent ervery 20 minutes, but not supported in Solaris, we can only use the upside command,0,5,10,15,20,25,30,35,40,45,50,55 in Solaris instead of */5 in Linux.
10 种迹象表明你的 DBA 该退休了
作者:admin 日期:2009-05-04
10 种迹象表明你的 DBA 该退休了
看到一篇十分有趣的关于 DBA 的帖子。10 种迹象表明你的 DBA 该退休了. 作者是 Chris Muir. 这 10 条越看越好玩，翻译并注释一下。
1. Complains about these "new fangled stored procedures".
对"存储过程这新玩意儿"抱怨不停。 (暗示这个人还停留在 oracle 古老版本的使用经验中。)
2. Rants about the good old days of oracle PE (Punchcard Edition).
嚷嚷着 oracle 卡片机版本(暗指非常古老的版本)美好时光.
Oracle orION
作者:admin 日期:2009-04-12
ORION (Oracle I/O Calibration Tool) is a standalone tool for calibrating the I/O performance for storage systems that are intended to be used for oracle databases. The calibration results are useful for understanding the performance capabilities of a storage system, either to uncover issues that would impact the performance of an oracle database or to size a new database installation. Since orION is a standalone tool, the user is not required to create and run an oracle database.
With the goal of closely mimicing the oracle database, orION generates a synthetic I/O workload, using the same I/O software stack as oracle. orION can be configured to generate a wide range of I/O workloads, including ones that simulate OLTP and data warehouse workloads.
orION is available for many platforms. Support for additional platforms will be added in the future. The User's Guide provides detailed usage documentation, including a "getting started" section and trouble-shooting tips. A summary of how to use orION is also available directly from orION by invoking the "-help" option.
Please note that orION is not supported by oracle.
Now the latest version is 11.1.0.7, as the version of oracle database. You can download software from here. The URL is http://www.oracle.com/technology/software/tech/orion/index.html
Also download orion_User_Guide here. The URL of User Guide is http://download.oracle.com/otn/utilities_drivers/orion/Orion_Users_Guide.pdf
Oracle Database 10g:为 DBA 提供的最佳的前 20 位特性
作者:admin 日期:2009-02-25
Oracle Database 10g:为 DBA 提供的最佳的前 20 位特性
英文版
http://www.oracle.com/technology/global/cn/pub/articles/10gdba/index.html
中文版
http://www.oracle.com/technology/pub/articles/10gdba/index.html
英文版官方下载
http://www.oracle.com/technology/pub/articles/10gdba/pdf/10gdba_complete.pdf
美媒:中国人的五大缺陷决定了其国家的悲剧命运(转)
作者:admin 日期:2009-02-22
美媒:中国人的五大缺陷决定了其国家的悲剧命运！
这是我在铁血军事上看的一个帖子，现在被删了。刚看的时候很不舒服，但看完后想想觉得基本上是准确的。自己想了一下，我还有我周围大部分人都能在身上找到几种或全部的文章中所说的缺陷。所以发到这里，希望大家看一下。同时希望作者作文时不要太注重技术方面的东西，教育不要只注重科学技术。十年树木，百年树人，现在我们的教育就是好树都去别人家了。
美媒:中国人的五大缺陷决定了其国家的悲剧命运！
如果20世纪的中国是一个富裕和统一的国家，我们会有一个完全不同的第一次世界大战，我们就不会有第二次世界大战而是第二次欧洲大战。中国能够阻止日本侵略或者打败日本。美国在这些冲突上的花费从根本意义上会减少很多，因为珍珠港事件不会发生。我们和整个世界，更不用说10亿中国人，一个多世纪以来，已经为中国的弱小付出了惨重的代价。世界需要一个健康的中国
