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mysql Innodb的ibdata的作用与分离
mysql INNODB类型数据状态下，ibdata用来储存文件的数据,而数据库名的文件夹里面的那些表文件只是结构而已,小心,万小心不能删除它,共享表空间管理会出现表空间分配后不能回缩的问题,所以它会变的越来越大,所以有必要对它进行分离
INNODB的独立表空间的参数：
innodb_file_per_table
具体步骤如下：
1、备份数据库mysqldump -uroot -p --all-database>c:/all_back_database.sql2、停止数据库mysqladmin --host=localhost --user=root --password shutdown3、删除相关文件ibdata1ib_logfile*4、手动删除除Mysql之外所有数据库文件夹，然后启动数据库net start mysql5、还原数据mysql -uroot -p<c:/all_back_database.sq
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