MySQL从MyISAM转换成InnoDB错误与常用解决办法
由于一些程序的要求，需要MyISAM数据引擎或InnoDB，下面是具体的解决方法，经测试偶尔会出现一些问题。
原来自己用的是为了装的， 所以在设置database usage（如下图1）的时候按照discuz官方的建议，选的都是Non-Transactional Database Only（只支持MyISAM数据引擎的非事务数据库），用MyISAM数据库，还没涉及到需要InnoDB，因此打算直接不加载INNODB引擎。后来在做WordPress，一开始还不知道原来WordPress用的是InnoDB数据引擎，于是在原来的数据库里面就建了一个数据库,一开始也没发觉问题，安装，导入sql，都没问题，当时也没多想。直到这几天因为又要装多一个WordPress，用phpmyadmin访问数据库多一点，问题来了。老是一访问WordPress的数据库，就弹出错误提示“Mysqld-nt.exe应用程序错误：“0x005346c4”指令引用的“0x00786000”内存，该内存不能为读...”，然后就MySQL服务也停了，登陆不了，整个数据库都访问不了。
图1 设置数据库类型
纠结了挺久，也忘了是看到什么文章触发了灵感，反正后来才知道原来是数据引擎不同惹的祸。于是就想到重新运行次设置向导，把数据库类型改成支持InnoDB引擎的。马上行动，在向导里设置数据库类型（也就是图1的database usage）那里，设置成第二项，还在后面的InnoDB Tablespace Settings里把InnoDB数据文件设置放在D:\MySQL InnoDB Datafiles目录里。但是在最后execute执行的时候，却老是在Start Service那里出问题，如下图2。
图2 Start service出错
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