还原数据库报：2006 - MySQL server has gone away [ERR]

[SQL] Query db_2020-11-30 start
[ERR] 2006 - MySQL server has gone away
[ERR] -- MySQL dump 10.13  Distrib 5.7.19, for Win64 (x86_64)

mysql> select @@max_allowed_packet;
+----------------------+
| @@max_allowed_packet |
+----------------------+
|              4194304 |
+----------------------+
1 row in set (0.02 sec)

mysql> set global max_allowed_packet = 1024 * 1024 * 1024;
Query OK, 0 rows affected (0.00 sec)