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11 advanced MySQL questions

 

Explain MySQL architecture
. - The front layer
takes care of network connections and security authentications, the
middle layer does the SQL query parsing, and then the query is handled
off to the storage engine. A storage engine could be either a default
one supp ......

¿ªÆô MySQL query cache£¬¼Ó¿ìÊý¾Ý¿â¶ÁÈ¡ËÙ¶È

 
ÔÚÍøÕ¾½¨Éè»òÕßÔËÓªÖУ¬Èç¹û MySQL server ÊǷdz£·±Ã¦£¬¿ÉÒÔ¿ªÆô query cache ÒÔ¼ÓËÙ»ØÓ¦Ê±¼ä£¬¿ªÆô·½·¨¿ÉÒÔÔÚ my.cnf 裡Ãæ¼ÓÈëÒÔÏÂÏîÄ¿: (Redhat ÏÂÃæÊÇ /etc/my.cnf£»Debian ÊÇÔÚ etc/mysql
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.\mysql\user is marked as crashed ½â¾ö°ì·¨

 
I found a solution to anyone else who may be having this problem.
First start mysql using skip grant tables
root@ns1 [/var/lib/mysql/mysql]# service mysql start --skip-grant-tables
Starting MySQL [ OK ]
now with mysql started, you can repair the mysql/user table
root@ns1 [/var/lib/mysql ......
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