一，配置文件正确，清除缓存 1.遇到这个问题先不要急着重新安装MySQL数据库，其实解决方法很简单，人需要清理下WIndows的缓存目录就可以了。 2.按windows键+R打开运行对话框，输入命令cmd，回车打开DOS窗口。 3.输入del c:windowstemp*.* /s /q，等待文件删
一，配置文件正确，清除缓存
1.遇到这个问题先不要急着重新安装MySQL数据库，其实解决方法很简单，，人需要清理下WIndows的缓存目录就可以了。
2.按“windows键+R”打开运行对话框，输入命令“cmd”，回车打开DOS窗口。
3.输入“del c:windowstemp*.* /s /q”，等待文件删除完，MySQL自然会恢复正常。
二，配置文件配置错误(mysql启动错误1067的解决 )
问题一
删除%windows%/my.ini 删除其它地方的my.ini 在mysql安装目录下把my-small.ini复制为my.ini 在my.ini
最后一行插入： CODE: [mysqld] #设置basedir指向mysql的安装路径
basedir=C:mysql-5.1.11-beta-win32 datadir=C:mysql-5.1.11-beta-win32data
重新启动。。。
C:mysql-5.1.11-beta-win32in>net start mysql MySQL
服务正在启动 . MySQL 服务无法启动。 系统出错。
发生系统错误 1067。 进程意外终止。
C:mysql-5.1.11-beta-win32in>mysqld-nt --remove Service successfully removed.
C:mysql-5.1.11-beta-win32in>mysqld-nt --install Service successfully installed.
C:mysql-5.1.11-beta-win32in>net start mysql MySQL 服务正在启动 . MySQL 服务已经启动成功。 C:mysql-5.1.11-beta-win32in>net stop mysql MySQL 服务正在停止.. MySQL 服务已成功停止。
问题二
Mysql装好后，重启电脑第二次发现服务无法启动。提示如下：
------------------------
MySQL 服务无法启动。
系统出错。
发生系统错误 1067。
进程意外终止。
------------------
查看了F:ProgramDataMySQLMySQL Server 5.5data 这个目录中的错误日志，显示如下内容：
130825 20:47:50 [Note] Plugin 'FEDERATED' is disabled.
130825 20:47:50 InnoDB: The InnoDB memory heap is disabled
130825 20:47:50 InnoDB: Mutexes and rw_locks use Windows interlocked functions
130825 20:47:50 InnoDB: Compressed tables use zlib 1.2.3
130825 20:47:50 InnoDB: Error: unable to create temporary file; errno: 2
130825 20:47:50 [ERROR] Plugin 'InnoDB' init function returned error.
130825 20:47:50 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
130825 20:47:50 [ERROR] Unknown/unsupported storage engine: INNODB
130825 20:47:50 [ERROR] Aborting
其中核心提示是这句，临时文件无法创建：
130825 20:47:50 InnoDB: Error: unable to create temporary file; errno: 2
因此查看my.ini
[mysqld]区段内加入：
#自己指定的临时文件目录
tmpdir="临时目录"
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