摘要:   阅读全文 http://www.oracle.com/technology/global/cn/products/timesten/index.html http://r.book118.com/files/article/html/19/19931/index.htm      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文      摘要:   阅读全文 巧用虚拟股权留住人心
天津Ｂ公司：虚拟股份制 
虚拟股权激励方案设计

http://www.hadoop.org/
The Apache Hadoop project develops open-source software for reliable, scalable, distributed computing, including:

• Hadoop Core, our flagship sub-project, provides a distributed filesystem (HDFS) and support for the MapReduce distributed computing metaphor.
• HBase builds on Hadoop Core to provide a scalable, distributed database.
• Pig is a high-level data-flow language and execution framework for parallel computation. It is built on top of Hadoop Core.
• ZooKeeper is a highly available and reliable coordination system. Distributed applications use ZooKeeper to store and mediate updates for critical shared state.
• Hive is a data warehouse infrastructure built on Hadoop Core that provides data summarization, adhoc querying and analysis of datasets.

     摘要:   阅读全文

http://www.hadoop.org/
The Apache Hadoop project develops open-source software for reliable, scalable, distributed computing, including:

• Hadoop Core, our flagship sub-project, provides a distributed filesystem (HDFS) and support for the MapReduce distributed computing metaphor.
• HBase builds on Hadoop Core to provide a scalable, distributed database.
• Pig is a high-level data-flow language and execution framework for parallel computation. It is built on top of Hadoop Core.
• ZooKeeper is a highly available and reliable coordination system. Distributed applications use ZooKeeper to store and mediate updates for critical shared state.
• Hive is a data warehouse infrastructure built on Hadoop Core that provides data summarization, adhoc querying and analysis of datasets.

http://rdc.taobao.com/blog/dw/archives/286 http://www.hadoop.org/
http://cn.hadoop.org/      摘要:   阅读全文

A SQL query walks into a bar and sees two tables. He walks up to them and says 'Can I join you?'

from:  http://tkyte.blogspot.com/

select to_date('Mon Jan 21 13:25:47 2008', 'dy mon dd hh24:mi:ss yyyy') from dual
Ora-01846: not a valid day of the week
出现的是中文的字符日期，如下：星期五 12月 19 13:53:15 2008
 是字符集的问题，解决：
alter session set nls_date_language = 'American'
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目录

一、       前言... 4

二、       思路... 4

三、       vmstat脚本及步骤... 4

1.       安装statspack. 4

2.       创建stats$vmstat表... 4

3.       创建vmstat目录... 6

4.       创建get_vmstat.ksh脚本... 6

5.       创建run_vmstat.ksh脚本... 8

6.       创建crontab作业，定时执行run_vmstat.ksh脚本... 9

7.       分析数据... 9

1)    异常报告... 9

2)    每小时趋势报告... 13

3)    周趋势报告... 14

4)    长期趋势报告... 14

四、       使用Excel生成趋势图... 15

五、       参考资料... 15
 改用传统的pfile方式启动，具体pfile的内容可从spfile文件中copy，或者从数据库的警告日志文件中获取。

在oracle中，NULL与NULL既不相等，也不完全不相等。SQL Server与Sybase中，NULL等于NULL.
--REF: oracle expert....