root allow 數據表 top error dump database 錯誤解決 大數

mysqldum導出大數據表錯誤
[root@Centos-6-99 itop]# mysqldump -u root -p --opt itop >/home/itop/itop-backup.sql
Enter password:
mysqldump: Error 2020: Got packet bigger than ‘max_allowed_packet‘ bytes when dumping table attachment at row: 1

解決辦法：增加mysqldump的 max_allowed_packet
[root@Centos-6-99 itop]# mysqldump -u root -p --max-allowed-packet=64943040 --opt itop >/home/itop/itop-backup.sql

Enter password:
[root@Centos-6-99 itop]# ls
databases.sql itop-backup.sql

mysql導出數據錯誤解決辦法