1、缺少 组件
[root@MySQL support-files]# mysql_convert_table_format -uroot -p123456 -e MyISAM USER ABC
Can't locate DBI.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at /application/mysql/bin/mysql_convert_table_format line 20.
BEGIN failed--compilation aborted at /application/mysql/bin/mysql_convert_table_format line 20.
解决：
[root@MySQL support-files]# rpm -qa|grep perl-DBD
[root@MySQL support-files]# yum install perl-DBD-MySQL -y 安装组件
2、无法连接到mysql
[root@MySQL support-files]# mysql_convert_table_format --user=root --password=123456 --engine=MyISAM oldboy ABC
Can't connect to database oldboy: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
解决(缺少sock参数)：
vim /etc/my.cnf
socket = /application/mysql-5.5.32/tmp/mysql.sock
mysql_convert_table_format --user=root --password=123456 --sock=/application/mysql-5.5.32/tmp/mysql.sock --engine=MyISAM USER ABC

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