------------備份------------

mysqldump -ujesoutletshop -pH6GMBd8jEBzxESNC --database jesoutletshop>nflstores.sql

------------還原------------

mysql-hhostname-uusername-ppassworddatabasename<backupfile.sql

gunzip -f </home/wwwroot/jeseys.top/jesey_op_20210526_102248.sql.gz| mysql -u root -predhat jesey_shop

=================================

解決問題：Variable 'time_zone' can't be set to the value of 'NULL'

這個問題的原因是因為資料sql檔案內部有註釋，去掉就可以了 ( 最前面幾行註釋即可 )

/*!40000 ALTER TABLE `t_error_identification` ENABLE KEYS */;
UNLOCK TABLES;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

=================================

解決問題：

ERROR 2006 (HY000) at line 3386: MySQL server has gone away

【解決方案】

vim /etc/my.cnf

找到 my.cnf 檔案，在 [mysqld] 節點下面，增加下面三行程式碼（主要是第一行）

max_allowed_packet=200M

wait_timeout=2880000

interactive_timeout=2880000