MySQL数据表损坏的巧妙修复
此文章主要向大家描述的是正确修复损坏的MySQL数据表的实际操作流程,我们大家都知道断电或者非正常关机往往会导致MySQL(和PHP搭配之最佳组合)数据库出现错误。其主要有两种方法: 一种方法使用MySQL(和PHP搭配之最佳组合)的check table和repair table 的sql
此文章主要向大家描述的是正确修复损坏的MySQL数据表的实际操作流程,我们大家都知道断电或者非正常关机往往会导致MySQL(和PHP搭配之最佳组合)数据库出现错误。其主要有两种方法:
一种方法使用MySQL(和PHP搭配之最佳组合)的check table和repair table 的sql语句,另一种方法是使用MySQL(和PHP搭配之最佳组合)提供的多个myisamchk, isamchk数据检测恢复工具。前者使用起来比较简便。推荐使用。
1. check table 和 repair table
登陆MySQL(和PHP搭配之最佳组合) 终端:
MySQL(和PHP搭配之最佳组合) -uxxxxx -p dbname
> check table tabTest;
如果出现的结果说Status是OK,则不用修复,如果有Error,可以用:
> repair table tabTest;
进行修复,修复之后可以在用check table命令来进行检查。在新版本的phpMyAdmin里面也可以使用check/repair的功能。
2. myisamchk, isamchk
其中myisamchk适用于MYISAM类型的数据表,而isamchk适用于ISAM类型的MySQL数据表。这两条命令的主要参数相同,一般新的系统都使用MYISAM作为缺省的数据表类型,这里以myisamchk为例子进行说明。当发现某个数据表出现问题时可以使用:
myisamchk tablename.MYI
进行检测,如果需要修复的话,可以使用:
myisamchk -of tablename.MYI
关于myisamchk的详细参数说明,可以参见它的使用帮助。需要注意的时在进行修改时必须确保MySQL(和PHP搭配之最佳组合)服务器没有访问这个MySQL数据表,保险的情况下是最好在进行检测时把MySQL(和PHP搭配之最佳组合)服务器Shutdown掉。
另外可以把下面的命令放在你的rc.local里面启动MySQL(和PHP搭配之最佳组合)服务器前:
[ -x /tmp/MySQL(和PHP搭配之最佳组合).sock ] && /pathtochk/myisamchk -of /DATA_DIR/*/*.MYI
其中的/tmp/MySQL(和PHP搭配之最佳组合).sock是MySQL(和PHP搭配之最佳组合)监听的Sock文件位置,对于使用RPM安装的用户应该是/var/lib/MySQL(和PHP搭配之最佳组合)/MySQL(和PHP搭配之最佳组合).sock,对于使用源码安装则是/tmp/MySQL(和PHP搭配之最佳组合).sock可以根据自己的实际情况进行变更,而pathtochk则是myisamchk所在的位置,DATA_DIR是你的MySQL(和PHP搭配之最佳组合)数据库存放的位置。
需要注意的时,如果你打算把这条命令放在你的rc.local里面,必须确认在执行这条指令时MySQL(和PHP搭配之最佳组合)服务器必须没有启动!
检测修复所有数据库(表)
MySQL(和PHP搭配之最佳组合)check -A -o -r -p
以上的相关内容就是对如何修复损坏的MySQL数据表的介绍,望你能有所收获。

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