RedHat 4下安装MySQL # rpm -ivhU --nodeps MySQL-server-standard-4.1.16-0.rhel4.i386.rpm # rpm -ivhU MySQL-client-standard-4.1.16-0.rhel4.i386.rpm # rpm -ivhU MySQL-devel-standard-4.1.16-0.rhel4.i386.rpm # /etc/init.d/mysql restart MySQL PID file could not be found! [FAILED] 这是怎么回事情？如何解决？

运行下面一行代码，连接数据库时候出错 报的错误是： Catchable fatal error: Object of class PDO could not be converted to string in /www/infomix.php on line 3

我想在我的机器上安装一个jxta的平台,来编写p2p的程序,所以 在jxta的网站www.jxta.org下载了jxta-shell-2.3.3.zip,解压缩后,生成一个shell的文件夹中，有jxta.exe,我想这个应该就是那个安装文件吧,但是我运行这个文件时,出错:could not find the main class,program will exit! 我的机器安装的是jbuilder9,带jdk1.4,另外我还装了j2sdk1.4.0_01 帮帮我吧,或者谁能告诉我,哪里有jxta的自带java虚拟机的for windows的安装版本下载(我...

怎么定位出究竟是哪个文件找不到了？ 2008-07-24-17.22.12.529294+180 I100971279G577 LEVEL: Error PID : 18996 TID : 410438576 PROC : db2hmon INSTANCE: db2inst1 NODE : 000 FUNCTION: DB2 UDB, oper system services, sqlowrite, probe:200 MESSAGE : ZRC=0x860F000A=-2045837302=SQLO_FNEX "File not found." DIA8411C A file "" could not be found. DATA #1 : File handle, PD_TYPE_SQO_FILE_HDL, 8 bytes 0x18769FE0 : 9...

[study@localhost study]$ python Python 2.4.3 (#1, Aug 26 2006, 12:55:14) [GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> help('print') Sorry, topic and keyword documentation is not available because the Python HTML documentation files could not be found. If you have installed them, please set the environment variab...

linux FS 失败could't found matching file system LABEL=/var 断电引起linux的/var分区失败，请大家急救，服务器死了

当我安装好yii后，当我执行 [root@wolf yiiapp]# ../yii/framework/yiic shell >> model User 出现一下错误: Warning: YiiBase::include(PDO.php): failed to open stream: No such file or directory in /usr/local/Apache2/htdocs/yii/framework/YiiBase.php on line 324Warning: YiiBase::include(): Failed opening 'PDO.php' for inclusion (include_path='.:/usr/local/Apache2/htdocs/yiiapp/protected/components:/usr/loc...

安装Appserver出现class 'mysqli' not found的错误? Answer: 1.在conf\php.ini中,在vim用"/php_mysql"搜索到extension=php_mysql.dll,去掉前面的";",同时在下面增加extension=php_mysqli.dll; 2."/extension_dir"检查路径是否正确; 3.找到ext/目录,把其中的php_mysql.dll,php_mysqli.dll两个文件Copy to %systemroot%/system32下. 4.重启服务.我的原因就是没有重启,只是重启了IMAP的Monitor. 本文来自ChinaUnix博客，如果查看...

我是一个初学Java的笨笨鸟，现在遇到一个奇怪的问题：编译完成后生成.class文件没问题， 可是用浏览器执行时浏览器窗口只有一个灰框，浏览器下方显示：load class boy not found。我的.Java源文件和.class文件在一个目录下， 浏览器: class height=300 width=300>; ; 现在是小程序不能运行，大程序编译运行都没问题。J2SDK1.4.2_04我也已经卸载并重新安装过了。 请问我该怎末解决呢？