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'
     摘要:   阅读全文 http://v.youku.com/v_playlist/f2076316o1p28.html http://edu.136z.com/DataBase/32042.html

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....

 

ref : http://www.sc.ehu.es/siwebso/KZCC/Oracle_10g_Documentacion/appdev.101/b10807/07_errs.htm 此处 open 不复制任何数据，只是在你获取数据时它才从表中读数据。 http://blogs.sun.com/chrisoliver/entry/javafx_vs_actionscript_performance

demo:   https://openjfx.dev.java.net/

sudo passwd root; This solution worked perfectly for me: http://www.insecure.ws/2008/10/20/vm...nd-kernel-2627
add this patch: vmware-update-2.6.27-5.5.7-2
$sudo apt-get install scim scim-modules-socket scim-modules-table scim-pinyin scim-tables-zh scim-gtk2-immodule scim-qtimm
$sudo im-switch -s scim
重新启动Xwindow完成。按 Ctrl + 空格 键激活输入法。

sudo apt-get install  linux-restricted-modules-2.6.27-11-server
sudo apt-get install  linux-headers-server
sudo apt-get install  linux-image-server linux-server
--it works.

sudo apt-get install pidgin
——————————————————————
pidgin是一个多协议的聊天工具，只要你有对应的帐户，就可以同时和几个帐户下的好友同时聊。
 按提示添加帐户就行了。
系统－系统管理－软件源,choose chinese site to get higher speed. http://msdn.microsoft.com/en-us/library/aa366778.aspx#physical_memory_limits_windows_xp 需以sysdba身份连接才能安装。
1，cd [oracle_home]\rdbms\admin;
2,run  @spcreate.sql;
按提示输入必要的信息。
如果输入错误或者取消了安装，下次安装前需要先执行 spdrop.sql删除用户和已安装的视图。
－－SPCPKG complete. Please check spcpkg.lis for any errors. 1，cd  [oracle_home]\rdbms\admin;
2, run  @utlxplan;
3, create public synonym plan_table to public; --no need to run in oracle10,oracle default
4, grant all on plan_table to public;--no need to run in oracle10,oracle default, here public can be any user;
----create role plustrace and grant it to user
1, cd [oracle_home]\sqlplus\admin;
2, conn sqlplus as sysdba;
3, run @plustrce;
4, grant plustrace to public;
---test
 1, conn sqlplus with user scott;
1.1, set autotrace on; 
 2, run : select * from dual;
 3, show stat info;
--1.1 可选项： set autotrace off: 不生成报告，默认；
                           set autotrace on explain: 报告只显示优化器执行路径；
                           set autotrace on statistics: 报告只显示sql语句执行统计信息；
                           set autotrace on: 报告显示优化器执行路径，sql语句统计信息；
                            set autotrace traceonly: 报告显示优化器执行路径，sql语句统计信息，不显示查询输出；

                          
ref：oracle 9i、10g编程艺术。

                         


ref：oracle 9i、10g编程艺术。
   sqlplus允许建立一个login.sql，通过设置环境变量SQLPATH，指向文件所在目录，每次启动sqlplus都会执行这个脚本。
login.sql例子：

 

define _editor: sqlplus默认的编辑器；
set serveroutput on size 1000000：默认打开DBMS_OUTPUT,将缓冲区设置尽可能大；
现象：
sys@ORCL> grant select on v$session to scott;
grant select on v$session to scott
                *
第 1 行出现错误:
ORA-02030: 只能从固定的表/视图查询

解决：
 grant select on v_$session to  scott;
  HKEY_LOCAL_MACHINE\SOFTWARE\Macromedia\FlashPlayer\SafeVersions]
将"9.0"，“10.0” 项删除，重新安装。