https://blog.youkuaiyun.com/jiagreeszh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/jiagrees/article/details/163568005https://blog.youkuaiyun.com/jiagrees/article/details/163568005jiagreesFri, 07 Aug 2026 16:22:50 +0800https://blog.youkuaiyun.com/jiagrees/article/details/163567049https://blog.youkuaiyun.com/jiagrees/article/details/163567049jiagreesFri, 07 Aug 2026 15:49:42 +0800https://blog.youkuaiyun.com/jiagrees/article/details/122737429https://blog.youkuaiyun.com/jiagrees/article/details/122737429jiagreesFri, 28 Jan 2022 22:26:04 +0800https://blog.youkuaiyun.com/jiagrees/article/details/84847497https://blog.youkuaiyun.com/jiagrees/article/details/84847497jiagreesThu, 06 Dec 2018 10:07:14 +0800https://blog.youkuaiyun.com/jiagrees/article/details/21164211https://blog.youkuaiyun.com/jiagrees/article/details/21164211jiagreesThu, 13 Mar 2014 12:14:47 +0800https://blog.youkuaiyun.com/jiagrees/article/details/21162463https://blog.youkuaiyun.com/jiagrees/article/details/21162463jiagreesThu, 13 Mar 2014 11:32:10 +0800https://blog.youkuaiyun.com/jiagrees/article/details/6708468https://blog.youkuaiyun.com/jiagrees/article/details/6708468jiagreesMon, 22 Aug 2011 14:25:18 +0800https://blog.youkuaiyun.com/jiagrees/article/details/6428795https://blog.youkuaiyun.com/jiagrees/article/details/6428795jiagreesWed, 18 May 2011 10:18:00 +0800远程桌面连接时提示：终端服务器超出了最大允许连接数
    今天管理一台服务器，远程连接时帐号密码都输入完后，点连接后弹出提示“终端服务器超出最大允许连接”。
一、背景
    Windows 2003终端服务有2种运行模式: 远程管理模式和终端服务器模式。
    “远程管理模式”允许系统管理员远程管理服务器，而且只允许2个终端会话同时登录终端服务器。
    “终端服务器模式”允许用户运行一个以上应用程序，允许多个用户从终端登录访问服务器。但]]>https://blog.youkuaiyun.com/jiagrees/article/details/6128831https://blog.youkuaiyun.com/jiagrees/article/details/6128831jiagreesTue, 11 Jan 2011 13:07:00 +0800Oracle数据导入导出imp/exp就相当于oracle数据还原与备份。exp命令可以把数据从远程数据库服务器导出到本地的dmp文件，imp命令可以把dmp文件从本地导入到远处的数据库服务器中。 利用这个功能可以构建两个相同的数据库，一个用来测试，一个用来正式使用。
 
执行环境：可以在SQLPLUS.EXE或者DOS（命令行）中执行，
 DOS中可以执行时由于 在oracle 8i 中  安装目录/ora81/BIN被设置为全局路径，
 该目录下有EX]]>https://blog.youkuaiyun.com/jiagrees/article/details/5984564https://blog.youkuaiyun.com/jiagrees/article/details/5984564jiagreesWed, 03 Nov 2010 13:40:00 +0800作者：laolaowhn 出处：个人博客  2007-9-3 11:51:07 阅读 534  次

  
介绍
弄懂  Page  的生存周期（lifecycle）对于开发  asp.net  应用程序来说是非常重要的。很多.net  初学者在处理动态加载控件的时候都出现过回发后丢值，丢状态之类的问题。HTTP  协议是无状态的，这就是  web  程序不同与  windows  程序]]>https://blog.youkuaiyun.com/jiagrees/article/details/5984543https://blog.youkuaiyun.com/jiagrees/article/details/5984543jiagreesWed, 03 Nov 2010 13:30:00 +0800 
SQL SERVER 2000中，有三个比较类似的功能：他们分别是：SCOPE_IDENTITY、IDENT_CURRENT 和 @@IDENTITY，它们都返回插入到 IDENTITY 列中的值。
IDENT_CURRENT 返回为任何会话和任何作用域中的特定表最后生成的标识值。IDENT_CURRENT 不受作用域和会话的限制，而受限于指定的表。IDENT_CURRENT 返回为任何会话和作用域中的特定表所生成的值。]]>https://blog.youkuaiyun.com/jiagrees/article/details/5701166https://blog.youkuaiyun.com/jiagrees/article/details/5701166jiagreesTue, 29 Jun 2010 10:19:00 +0800改善SQL语句

　　很多人不知道SQL语句在SQL SERVER中是如何执行的，他们担心自己所写的SQL语句会被SQL SERVER误解。比如：select * from table1 where name=''zhangsan'' and tID > 10000
和执行:select * from table1 where tID > 10000 and name=''zhangsan''
　　一些人不知道以上两条语句的执行效率是否一样，因为如果简单的]]>https://blog.youkuaiyun.com/jiagrees/article/details/5701151https://blog.youkuaiyun.com/jiagrees/article/details/5701151jiagreesTue, 29 Jun 2010 10:12:00 +0800索引
可以利用索引快速访问数据库表中的特定信息。索引是对数据库表中一个或多个列（例如，employee 表的姓氏 (lname) 列）的值进行排序的结构。如果想按特定职员的姓来查找他或她，则与在表中搜索所有的行相比，索引有助于更快地获取信息。
索引提供指针以指向存储在表中指定列的数据值，然后根据指定的排序次序排列这些指针。数据库使用索引的方式与使用书的目录很相似：通过搜索索引找到特定的值，然后跟随指针到达包含该值的行。
在数据库关系图中，可以为选定的表创建、编]]>https://blog.youkuaiyun.com/jiagrees/article/details/5635633https://blog.youkuaiyun.com/jiagrees/article/details/5635633jiagreesMon, 31 May 2010 09:13:00 +0800https://blog.youkuaiyun.com/jiagrees/article/details/5538236https://blog.youkuaiyun.com/jiagrees/article/details/5538236jiagreesWed, 28 Apr 2010 11:50:00 +0800https://blog.youkuaiyun.com/jiagrees/article/details/5537696https://blog.youkuaiyun.com/jiagrees/article/details/5537696jiagreesWed, 28 Apr 2010 10:05:00 +0800https://blog.youkuaiyun.com/jiagrees/article/details/5537565https://blog.youkuaiyun.com/jiagrees/article/details/5537565jiagreesWed, 28 Apr 2010 09:37:00 +0800https://blog.youkuaiyun.com/jiagrees/article/details/5508628https://blog.youkuaiyun.com/jiagrees/article/details/5508628jiagreesTue, 20 Apr 2010 22:02:00 +0800https://blog.youkuaiyun.com/jiagrees/article/details/5403804https://blog.youkuaiyun.com/jiagrees/article/details/5403804jiagreesMon, 22 Mar 2010 11:39:00 +0800https://blog.youkuaiyun.com/jiagrees/article/details/5403068https://blog.youkuaiyun.com/jiagrees/article/details/5403068jiagreesMon, 22 Mar 2010 08:57:00 +0800