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运维同事近日给到我这边一个mysql的备份脚本文件,大小超过2.4G。
于是直接通过Navicat客户端导入脚本,但是报错:MySQL server has gone away。
于是想通过截取文件,部分导入,事与愿违
由于文件太大,一般的软件比如记事本notepad和notepad++,editplus都无法正常打开。
几经周转发现UltraEdit能够打开4G的文件。
比较好奇,为啥几次都不能通过直接在客户端导入,发现问题的原因是mysql的
max_allowed_packet配置的默认值设置太小,但是max_allowed_packet
最大值是1G(1073741824),如果设置超过1G,查看最终生效结果也只有1G。
运行2.4G的脚本还是失败。
图中设置4G(3221225472)
尝试在服务端使用命令导入
mysql.exe -h localhost -u root -p < D:\DataBase\mysql-20200424.sql
超大mysql的脚本文件想要直接导入需要在服务端使用命令才可以。
总结:
1.如果sql脚本少于1G,可以通过修改max_allowed_packet参数,重启mysql服务,在客户端执行导入成功。
2.如果超过1G,需要在服务端使用命令行导入。
3.如果只需要导入部分数据,使用UltraEdit打开sql脚本,找出需要的内容,在客户端执行导入即可。