mysql的备份

Posted 2021-01-23 ZYXLYFYWJ

1、SQL导出： mysqldump database table ；
     导入时使用：source hello.sql；
缺点：速度慢，占空间大；
2、使用界定符文件备份
     备份：mysql >  select * into outfile ‘/tmp/hello.txt‘ fields terminated by ‘,‘ optionally enclosed by ‘"‘ lines terminated by ‘ ‘ from test.test;
     还原：mysql > load data infile ‘/tmp/hello.txt‘ into table test.test fields terminated by ‘,‘ optionally enclosed by ‘"‘ lines terminated by ‘ ‘;

3、如果用mysql的软件Navicat for Mysql导出就按步骤转储即可，但是导入时一定要先创建一个数据库，然后导入，否则导入会错误。
4、并行导出与还原
    多个线程对多个表同时做导出或还原。可以自己编写多线程脚本或使用mk-parallel-dump工具。