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zookeeper启动失败
集群中3个节点,第一个started,第二个说Starting zookeeper ... already running as process xxxx,第三个说Starting zookeeper ... already running as process yyyy。原来是相应目录下残留的pi...
分类:其他好文   时间:2014-08-22 10:45:25    阅读次数:1111
Oracle11.2.0.4 RAC GI ORA-15003: diskgroup "XXXX" already mounted in another lock name space
安装GI,在执行root.sh时报错:Disk Group CRSDG creation failed with the following message:ORA-15018: diskgroup cannot be createdORA-15017: diskgroup "CRSDG" cann...
分类:数据库   时间:2014-08-22 01:34:15    阅读次数:656
eclipse 中添加工程 Some projects cannot be imported because they already exist in the workspace
遇到问题: 第一次从外部文件导入HelloWorld工程到workspace目录中,成功。 删除后,再次从外部导入workspace目录提示 Some projects cannot be imported because they already exist in the workspace  eclipse中删除HelloWorld工程时没有勾选Delete pr...
分类:系统相关   时间:2014-08-21 17:10:34    阅读次数:218
MySql排名查询
-- ------------------------------------------------------------ 表的结构 `score`--CREATE TABLE IF NOT EXISTS `score` ( `id` int(11) NOT NULL AUTO_INCREME....
分类:数据库   时间:2014-08-21 01:34:43    阅读次数:624
tomcat dbcp 基于jndi配置时出现java.sql.SQLException: Already closed
tomcat dbcp 基于jndi配置时出现java.sql.SQLException: Already closed...
分类:数据库   时间:2014-08-20 10:30:06    阅读次数:233
Monthly Expense
Problem Description Farmer John is an astounding accounting wizard and has realized he might run out of money to run the farm. He has already calculated and recorded the exact amount of money (1 ...
分类:其他好文   时间:2014-08-19 22:34:09    阅读次数:228
在Asp.net中为图像加入水印信息
using System.Drawing; using System.IO; using System.Drawing.Imaging; private void AddTextToImg(string fileName,string text) { if(!File.Exists(MapPath(fileName))) ...
分类:Web程序   时间:2014-08-19 14:35:08    阅读次数:204
bind出现Address already in use
如果先ctrl+c结束服务器端程序的话,再次启动服务器就会出现Address already in use这个错误,或者你的程序在正常关闭服务器端socket后还是有这个问题bind 普遍遭遇的问题是试图绑定一个已经在使用的端口。该陷阱是也许没有活动的套接字存在,但仍然禁止绑定端口(bind 返回 ...
分类:其他好文   时间:2014-08-18 21:43:52    阅读次数:278
zoj 1203 Swordfish (kruskal 克鲁斯卡尔)
Swordfish Time Limit: 2 Seconds      Memory Limit: 65536 KB There exists a world within our world A world beneath what we call cyberspace. A world protected by firewalls, passwords and the mo...
分类:其他好文   时间:2014-08-18 20:32:12    阅读次数:334
J2EE编程心得-使用Hibernate出现的错误及解决方法 更新中...
1.  使用Hibernate时出现Session was already closed异常 出现此异常的原因是Session已经被关闭 如果不是使用的SessionFactory.getSession()来获得Session。         而是使用SessionFactory.getCurrentSession()方法来获得Session时,当事务结束的时候,不管是提交还是回滚事务...
分类:系统相关   时间:2014-08-18 18:44:12    阅读次数:201
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