mysql优化操作时遇到的问题

MySQL Plugin 'InnoDB' init function returned error.
. . 在MySQL的配置文件中，设置InnoDB的相关优化参数，发现MySQL无法正常的启动，错误日志中给出了如下的信息：


引用
00703 09:28:53 mysqld_safe Starting mysqld daemon with databases from /root/sandboxes/spider_main/data
InnoDB: Error: log file ./ib_logfile0 is of different size 0 5242880 bytes
InnoDB: than specified in the .cnf file 0 134217728
100703  9:28:54 [ERROR] Plugin 'InnoDB' init function returned error.
100703  9:28:54 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
100703  9:28:54 [Note] Found 1 prepared transaction(s) in SPIDER
100703  9:28:54 [Warning] Found 1 prepared XA transactions
100703  9:28:54 [Note] Event Scheduler: Loaded 0 events
100703  9:28:54 [Note] /home/spider/mysql-5.1.44/5.1.44/bin/mysqld: ready for connections.
Version: '5.1.44' socket: '/tmp/mysql_sandbox5144.sock' port: 3306  Source distribution
100703  9:34:59 [Note] /home/spider/mysql-5.1.44/5.1.44/bin/mysqld: Normal shutdown




只要删除MySQL目录下的ib_logfile0和ib_logfile1两个文件，就可以解决问题了。


mysqldump 备份数据的时候mysqldump: unknown option '--events'
最后发现mysqldump的路径不对，which mysqldump 查看路径
添加mysql的环境变量
[root@light /]# tail -1 /etc/profile
export PATH=/application/mysql/bin:$PATH
[root@light4 /]# which mysqldump
/application/mysql/bin/mysqldump