https://blog.youkuaiyun.com/helifengwellzh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/helifengwell/article/details/6796753https://blog.youkuaiyun.com/helifengwell/article/details/6796753helifengwellWed, 21 Sep 2011 13:00:44 +0800https://blog.youkuaiyun.com/helifengwell/article/details/6644847https://blog.youkuaiyun.com/helifengwell/article/details/6644847helifengwellFri, 29 Jul 2011 16:38:27 +0800https://blog.youkuaiyun.com/helifengwell/article/details/6644763https://blog.youkuaiyun.com/helifengwell/article/details/6644763helifengwellFri, 29 Jul 2011 16:21:55 +0800sqlplus /nolog SQL*Plus: Release 9.2.0.1]]>https://blog.youkuaiyun.com/helifengwell/article/details/6619367https://blog.youkuaiyun.com/helifengwell/article/details/6619367helifengwellWed, 20 Jul 2011 11:22:35 +0800https://blog.youkuaiyun.com/helifengwell/article/details/6617556https://blog.youkuaiyun.com/helifengwell/article/details/6617556helifengwellTue, 19 Jul 2011 17:06:23 +0800https://blog.youkuaiyun.com/helifengwell/article/details/6415085https://blog.youkuaiyun.com/helifengwell/article/details/6415085helifengwellThu, 12 May 2011 16:32:00 +0800本文档是针对Log4j日志工具的使用指南。包括：日志介绍、日志工具介绍、Log4j基本使用、Log4j的高级使用、Spring与log4j的集成等。并进行了举例说明。
本文档适合所有Java开发人员。2         日志介绍
存储软件程序、服务或操作系统产生的消息记录的文件。
电脑里的日志是指日志数据可以是有价值的信息宝库，也可以是毫无价值的数据泥潭。要保护和提高你的网络安全，由各种操作系统、应用程序、设备和安全产品的日]]>https://blog.youkuaiyun.com/helifengwell/article/details/6406928https://blog.youkuaiyun.com/helifengwell/article/details/6406928helifengwellMon, 09 May 2011 16:42:00 +0800一、boolean execute(String sql)
允许执行查询语句、更新语句、DDL语句。
返回值为true时，表示执行的是查询语句，可以通过getResultSet方法获取结果；返回值为false时，执行的是更新语句或DDL语句，getUpdateCount方法获取更新的记录数量。
例子:
 st = con.createStatement();
boolean ret = st.execute("select username,]]>https://blog.youkuaiyun.com/helifengwell/article/details/6126292https://blog.youkuaiyun.com/helifengwell/article/details/6126292helifengwellMon, 10 Jan 2011 10:25:00 +0800创建一个文件夹
mkdir /mnt/usb
挂载U盘
挂u盘之前，运行命令cat /proc/partitions,看看现在系统中有哪些分区。插上u盘以后，再次运行上述命令，看看多出来什么分区（通常是sda1，PS由于偶是在虚拟机下装的，所以是sdb1).
1、插入U盘
2、输入fdisk -l /dev/sda 查看输出结果，比如我的是这样的：
     # fdisk -l /dev/sda
     Disk /dev]]>https://blog.youkuaiyun.com/helifengwell/article/details/5861480https://blog.youkuaiyun.com/helifengwell/article/details/5861480helifengwellFri, 03 Sep 2010 14:57:00 +0800目录
版权声明
前言：关于find命令

一、find 命令格式
1、find命令的一般形式为；
2、find命令的参数；
3、find命令选项；
4、使用exec或ok来执行shell命令；
二、find命令的例子；1、查找当前用户主目录下的所有文件；
2、为了在当前目录中文件属主具有读、写权限，并且文件所属组的用户和其他用户具有读权限的文件；
3、为了查找系统中所有文件长度为0的普通]]>https://blog.youkuaiyun.com/helifengwell/article/details/5855144https://blog.youkuaiyun.com/helifengwell/article/details/5855144helifengwellWed, 01 Sep 2010 11:14:00 +08001、核对lib包
 
commons-fileupload-1.2.1.jar，
commons-io-1.3.2.jar
commons-logging-1.0.4.jar
freemarker-2.3.16.jar
ognl-3.0.jar
struts2-core-2.2.1.jar
xwork-core-2.2.1.jar）
 
注意2.1以前是没有commons-fileupload-1]]>https://blog.youkuaiyun.com/helifengwell/article/details/5844200https://blog.youkuaiyun.com/helifengwell/article/details/5844200helifengwellFri, 27 Aug 2010 17:15:00 +0800ps -efo pmem,uid,pid,ppid,pcpu,comm | sort -r用PS命令的-o选项来实现，这些选项有：user ruser group rgroup uid ruid gid rgid pid ppid pgid sid taskid ctid pri opri pcpu pmem vsz rss osz nice class time etime stime zone zoneid f s c lwp nlwp psr tty addr wchan fname comm a]]>https://blog.youkuaiyun.com/helifengwell/article/details/5820434https://blog.youkuaiyun.com/helifengwell/article/details/5820434helifengwellWed, 18 Aug 2010 11:39:00 +08001,先到Oracle网站下载Instant Client :
http://www.oracle.com/technology/global/cn/software/tech/oci/instantclient/index.html
根据你的操作系统选择不同的Instant Client版本
下载回是一个压缩文件,解压之后的文件夹叫:D:/instantclient_11_2.放在你喜欢的目录即可.例如:D:/instantclient_11_2
 https://blog.youkuaiyun.com/helifengwell/article/details/5659044https://blog.youkuaiyun.com/helifengwell/article/details/5659044helifengwellWed, 09 Jun 2010 17:19:00 +0800始 - 运行 - 输入services.msc - 启动OracleDBConsoleorcl服务提示有误。

手工从cmd命令行启动：

C:/Documents and Settings/wangnc>emctl start dbconsole
Environment variable ORACLE_SID not defined. Please define it.

设置Oracle_sid环境变量：
https://blog.youkuaiyun.com/helifengwell/article/details/5624394https://blog.youkuaiyun.com/helifengwell/article/details/5624394helifengwellWed, 26 May 2010 09:28:00 +0800https://blog.youkuaiyun.com/helifengwell/article/details/5579509https://blog.youkuaiyun.com/helifengwell/article/details/5579509helifengwellTue, 11 May 2010 17:05:00 +0800https://blog.youkuaiyun.com/helifengwell/article/details/5519203https://blog.youkuaiyun.com/helifengwell/article/details/5519203helifengwellFri, 23 Apr 2010 11:42:00 +0800https://blog.youkuaiyun.com/helifengwell/article/details/5519125https://blog.youkuaiyun.com/helifengwell/article/details/5519125helifengwellFri, 23 Apr 2010 11:28:00 +0800https://blog.youkuaiyun.com/helifengwell/article/details/2805908https://blog.youkuaiyun.com/helifengwell/article/details/2805908helifengwellThu, 21 Aug 2008 11:44:00 +0800