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http://blog.csdn.net/zyz511919766/article/details/49335897
1.若库中所有表为MyISAM引擎，则可改库对应的文件夹的名字
关闭MySQL Server：
/etc/init.d/mysql stop
改目录名：
cd /data/mysql; mv old_db new_db;
开启MySQL Server
/etc/init.d/mysql start
2.重命名旧库下边的所有表
create databases new_db; rename table old_db.table1 to new_db.table1,old_db.table2 to new_db.table2,...; drop database old_db;
eg:
mysql> create database old_db; Query OK, 1 row affected (0.00 sec) mysql> use old_db; Database changed
mysql> create table a ( a int); Query OK, 0 rows affected (0.24 sec) mysql> insert into a select 1; Query OK, 1 row affected (0.01 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> create database new_db; Query OK, 1 row affected (0.00 sec) mysql> rename table old_db.a to new_db.a; Query OK, 0 rows affected (0.18 sec) mysql> use new_db; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select * from a; +------+ | a | +------+ | 1 | +------+ 1 row in set (0.18 sec) mysql> use old_db; Database changed
mysql> select * from a; ERROR 1146 (42S02): Table ‘old_db.a‘ doesn‘t exist
mysql> drop database old_db; Query OK, 0 rows affected (0.01 sec)
3.建新库，使用mysqldump工具导出老库数据并导入新库
mysqldump -uuser -ppass -hhost -Pport --single-transaction old_db >old_db.sql
mysql -uuser -ppass -hhost -Pport -e "create database new_db"
mysql -uuser -ppass -hhost -Pport new_db < old_db.sql
mysql -uuser -ppass -hhost -Pport -e "drop database old_db"
其中方法2中表比较多的情况下，一个个写这些名称未免太痛苦了，可用shell脚本或者存储过程来完成
#!/bin/bash mysqlconn=" mysql -uuser -ppass -hhost -Pport ” old_db=”old_db ” new_db=”new_db ” $mysqlconn -e “CREATE DATABASE $new_db” params=$($mysqlconn -N -e “SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=’$old_db’”) for name in $params; do $mysqlconn -e “RENAME TABLE $old_db.$name to $new_db.$name”; done; $mysqlconn -e “DROP DATABASE $old_db”
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原文地址：http://www.cnblogs.com/zengkefu/p/5689602.html
