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yum提示another app is currently holding the yum lock;waiting for it to exit
有的时候使用yum命令的时候提示如下错误信息:可能是系统自动升级正在运行,yum在锁定状态中。可以通过强制关掉yum进程:#rm -f /var/run/yum.pid然后就可以使用yum了。
分类:移动开发   时间:2015-03-01 11:46:00    阅读次数:201
cursor: pin S
cursor: pin S OTN 解释如下:   cursor: pin SA session waits on this event when it wants to update a shared mutex pin and another session is currently in the process of updating a shared mutex pin f...
分类:其他好文   时间:2015-02-28 21:42:53    阅读次数:147
Another app is currently holding the yum lock
在CentOS上yum -y install gcc* gcc-c++* autoconf* automake* zlib* libxml* ncurses-devel* libmcrypt* libtool*时出现错误:   1)怎么回事呢?根据提示,原来是系统进程已经有一个update在运行了。在进程里查看下:ps -ef | grep update 2)通过kill杀掉这个进程,可...
分类:移动开发   时间:2015-02-28 13:02:49    阅读次数:194
Hadoop HDFS源码分析 关于数据块的类
Hadoop HDFS源码分析 关于数据块的类1.BlocksMap官方代码中的注释为:/** * This class maintains the map from a block to its metadata. * block's metadata currently includes blo...
分类:其他好文   时间:2015-02-28 00:11:24    阅读次数:294
Sqlmap的sqlmapapi.py简单使用
look: stamparm commented on 24 Feb 2014 @riramar There is currently none :). I'll just give you a quick intro. At server side: $ python sqlmapapi.py -s -H 0.0.0.0 [19:42:00] [INFO...
分类:数据库   时间:2015-02-16 06:51:46    阅读次数:492
Custom Sublime Text Build Systems For Popular Tools And Languages
Sublime Textis currently the text editor of choice for a number of developers in the open-source community. It’s sophisticated, has powerfultext selec...
分类:其他好文   时间:2015-02-11 20:31:31    阅读次数:285
scoj2832: Mars city fzoj1462
Time Limit: 1000 mSec    Memory Limit : 32768 KB Problem Description Year 2900. Many people left Earth and built some cities on Mars. Currently there are N cities, some of which are connected b...
分类:其他好文   时间:2015-02-11 16:48:03    阅读次数:168
jdbc连接数据库使用sid和service_name的区别
问题描述:ORA-12505, TNS:listener does not currently know of SID given in connect descriptor The Connection descriptor used by the client was: 10.12.162.84...
分类:数据库   时间:2015-02-11 14:25:21    阅读次数:213
listener does not currently know of SID given in connect descriptor
一次连接数据库怎么也连接不上,查了多方面资料,终于找到答案,总结 首先应该保证数据库的服务启动 在myeclipse的数据库视图中点 右键->new 弹出database driver的窗口, Driver template选择oracle(thin driver), Driver name 输入o...
分类:其他好文   时间:2015-02-10 15:18:12    阅读次数:143
Linux删除用户
删除用户# userdel abc该删除操作将用户删除但保留用户的home文件夹和邮件文件夹。并且当用户abc正在登录的时候,删除操作将失败,如下:# userdel abcuserdel: user abc is currently logged in如果要删除用户同时删除用户的home文件夹以及...
分类:系统相关   时间:2015-02-10 13:10:07    阅读次数:171
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