Home Database Mysql Tutorial 详解Linux下修复损坏的MySQL数据库

详解Linux下修复损坏的MySQL数据库

Mar 30, 2017 pm 03:25 PM

Linux下由于断电或非正常关机而导致MySQL数据库出现错误是非常常见的问题。MySQL分别针对不同的数据表类型提供了多个数据检测恢

在Linux下由于断电或非正常关机而导致MySQL数据库出现错误是非常常见的问题。MySQL分别针对不同的数据表类型提供了多个数据检测恢复工具,这些工具是:

myisamchk
isamchk
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其中myisamchk适用于MYISAM类型的数据表,而isamchk适用于ISAM类型的数据表。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
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进行检测,,如果需要修复的话,可以使用:

myisamchk -of tablename.MYI
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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服务器没有访问这个数据表,保险的情况下是最好在进行检测时把MySQL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服务器前:

[ -x /tmp/mysql.sock ] && /pathtochk/myisamchk -of /DATA_DIR/*/*.MYI
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其中的/tmp/mysql.sock是MySQL监听的Sock文件位置,对于使用RPM安装的用户应该是/var/lib/mysql/mysql.sock,对于使用源码安装则是/tmp/mysql.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服务器必须没有启动!

 以上就是详解Linux下修复损坏的MySQL数据库的内容,更多相关内容请关注PHP中文网(www.php.cn)!


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