ERROR 2006 (HY000) at line 1: MySQL server has gone away

Question

ERROR 2006 (HY000) at line 1: MySQL server has gone away

I am facing the same problem. I am trying to restore mysqldump file to my machine. The file have size of 2.7 MB

Answer 1

Under [mysqld] I have tried the following:

max_allowed_packet = 2096M

restarted mysqld and it did not work, however what worked for me is to set max_allowed_packet globally from command line and then run the export from dump, it went through without any issues.

You can start from smaller packet size depending on database, I also did reimport my database with same size.

For Export:-

mysqldump --opt --user=confluenceUser --password='' --max_allowed_packet=2147483648 confluencedb | gzip > confluencedb.sql.gz

For Import:-

mysql> SET GLOBAL max_allowed_packet=2147483648;

Query OK, 0 rows affected, 1 warning (0.00 sec)

zcat confluence.sql.gz | mysql -uconfluence -p confluencedb