MYSQL have_innodb DISABLED无法创建innodb类型的表

admin

今天在一台MYSQL服务器上发现，明明用了engine=innodb创建的表，结果创建出来却成了myisam的表。再看show variables like '%innodb%';

have_innodb 成了DISABLED。经过一番试验，发现是我关闭数据库后，直接删除ibdata1文件造成的。删除该文件以后，重启数据库，日志文件中会有：
060330 17:22:07  mysqld started
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
060330 17:22:07  InnoDB: Setting file ./ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Error: all log files must be created at the same time.
InnoDB: All log files must be created also in database creation.InnoDB: If you want bigger or smaller log files, shut down the
InnoDB: database and make sure there were no errors in shutdown.
InnoDB: Then delete the existing log files. Edit the .cnf file
InnoDB: and start the database again.
060330 17:22:07 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.0.19-standard-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Edition - Standard (GPL)
060330 17:22:26 [Note] /usr/sbin/mysqld: Normal shutdown
看来只删除ibdata1文件是不行的，于是再度关闭数据库，把ibdata1和ib_logfile1、ib_logfile0统统删除，再启动，have_innodb 就变成Yes了。