转自:https://blog.csdn.net/orangleliu/article/details/63275154
检查特定的表:
如果应用中提示某个表坏了,使用下面的命令来检查。
$ mysqlcheck -c newmandela order -uroot -p
Enter password:
newmandela.order OK
newmandela 是库名, order是表名,还需要输入用户名和密码
检查一个库中的所有表:
$ mysqlcheck -c newmandela -uroot -p
Enter password:
newmandela.account OK
newmandela.alarm OK
newmandela.alarm_settings OK
newmandela.auth_group OK
newmandela.auth_group_permissions OK
newmandela.auth_permission OK
检查所有库中的所有表:
全部的库和表都检查一遍了。
$mysqlcheck -c --all-databases -uroot -p
Enter password:
apmonitor.acinfo OK
apmonitor.apdailysts OK
apmonitor.apinfo OK
apmonitor.apmonthsts OK
apmonitor.apscanlog OK
apmonitor.auth_group OK
如果只想检查某几个库呢? 可以使用 –databases 参数:
$ mysqlcheck -c --databases newmandela radius -uroot -p
Enter password:
newmandela.account OK
newmandela.alarm OK
newmandela.alarm_settings OK
newmandela.auth_group OK
使用 mysqlcheck 分析表:
$ mysqlcheck -a radius payment_transactionrecord -uroot -p
Enter password:
radius.payment_transactionrecord Table is already up to date
上面的命令 用来分析 radius 库的 payment_transactionrecord表, -a 表示 analyze
使用 mysqlcheck 优化表:
# mysqlcheck -o radius payment_transactionrecord -uroot -p
Enter password:
radius.payment_transactionrecord OK
-o 代表 optimize ,这里是优化 radius 库的 payment_transactionrecord 表
使用 mysqlcheck 修复表:
# mysqlcheck -r radius payment_transactionrecord -uroot -p
Enter password:
radius.payment_transactionrecord OK
-r 代表 repair ,这里是 修复 radius 库的 payment_transactionrecord 表
检查,优化,修复表组合命令:
# mysqlcheck -uroot -p --auto-repair -c -o newmandela
Error: mysqlcheck doesn't support multiple contradicting commands.
上面的命令报错了,去掉 -c
# mysqlcheck -uroot -p --auto-repair -o newmandela
Enter password:
newmandela.account
note : Table does not support optimize, doing recreate + analyze instead
status : OK
newmandela.alarm
note : Table does not support optimize, doing recreate + analyze instead
status : OK
newmandela.alarm_settings
note : Table does not support optimize, doing recreate + analyze instead
status : OK
每张表都出现了 Table does not support optimize, doing recreate + analyze instead, 代表什么意思呢? 它的意思不是说 innodb 引擎不支持 优化,可以参考 http://stackoverflow.com/questions/30635603/what-does-table-does-not-support-optimize-doing-recreate-analyze-instead-me 的回答。
mysqlcheck 常用选项
A, –all-databases 表示所有库
-a, –analyze 分析表
-o, –optimize 优化表
-r, –repair 修复表错误
-c, –check 检查表是否出错
–auto-repair 自动修复损坏的表
-B, –databases 选择多个库
-1, –all-in-1 Use one query per database with tables listed in a comma separated way
-C, –check-only-changed 检查表最后一次检查之后的变动
-g, –check-upgrade Check for version dependent changes in the tables
-F, –fast Check tables that are not closed properly
–fix-db-names Fix DB names
–fix-table-names Fix table names
-f, –force Continue even when there is an error
-e, –extended Perform extended check on a table. This will take a long time to execute.
-m, –medium-check Faster than extended check option, but does most checks
-q, –quick Faster than medium check option
原文地址:http://blog.51cto.com/net881004/2110631