数据库 发布日期：2024/9/22 浏览次数：1
MySQL无法启动的解决办法
MySQL无法启动
在停止mysql之后，执行了一些操作（如修改主机名），重新启动 mysql，发现起不来。
[root@www ~]$ service mysql start Starting MySQL..^[[A.................................................................................................. ERROR! The server quit without updating PID file (/disk/mysql/www.pid). [root@www ~]$ service mysql stop ERROR! MySQL server PID file could not be found! [root@www ~]$ service mysql stop ERROR! MySQL server PID file could not be found! [root@www ~]$ service mysql start Starting MySQL.................. 还是老样子，只好 Ctr+C 掉。 [root@www ~]$
实在是启动不了，看一下日志：/disk/mysql/www.err
120608 09:56:17 mysqld_safe Starting mysqld daemon with databases from /disk/mysql 120608 9:56:17 [Note] Plugin 'FEDERATED' is disabled. 120608 9:56:17 InnoDB: The InnoDB memory heap is disabled 120608 9:56:17 InnoDB: Mutexes and rw_locks use InnoDB's own implementation 120608 9:56:17 InnoDB: Compressed tables use zlib 1.2.3 120608 9:56:17 InnoDB: Using Linux native AIO 120608 9:56:17 InnoDB: Initializing buffer pool, size = 128.0M 120608 9:56:17 InnoDB: Completed initialization of buffer pool InnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. 120608 9:56:17 InnoDB: Retrying to lock the first data file InnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. InnoDB: Unable to lock ./ibdata1, error: 11 InnoDB: Check that you do not already have another mysqld process InnoDB: using the same InnoDB data or log files. InnoDB: Unable to lock ./ibdata1, error: 11 ...
好像是原来的 mysqld 并没有停下来。
强制终止 mysqld
[root@www ~]$ ps -ef|grep mysql root 4769 1 0 Jun06 "htmlcode">[root@www ~]$ service mysql start Starting MySQL. SUCCESS! [root@www ~]$ [root@www ~]$ [root@www ~]$ [root@www ~]$ [root@www ~]$ service mysql start Starting MySQL SUCCESS! [root@www ~]$前面 www.err 文件中显示的 error: 11 到底是什么，看下：
[root@www ~]$ perror 11 OS error code 11: Resource temporarily unavailable [root@www ~]$ [root@www ~]$如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！