I'm migrating data from magento 1.7.0.2 to Magento 2 and get the following error:
MySQL server has gone away
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Please check your MySQL "wait_timeout" variable to make sure MySQL is not closing the database connection early.– user35138Commented Jan 15, 2016 at 17:40
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1 Answer
I had the same problem and solved it by increasing the following value in the /etc/mysql/my.cnf mysql configuration file:
max_allowed_packet=4000M # just set it to 4000M because on my dev machine i don't care
Be carefull to not change the mysqldump option, there is also a max_allowed_packet
I also added this line to set the wait_timeout in the same configuration file:
wait_timeout=6000
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2Late to this party. Could you confirm with SELECT @@max_allowed_packet size is 4G? Most version documentation indicates the Range is up to 1G. Error log many indicate at startup a different max available. Commented Jul 4, 2018 at 0:26
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I can't confirm this. Maybe it just uses the max value from 1GB when setting it to a bigger value. But 1GB will be way enough anyways.– bpoissCommented Jul 4, 2018 at 9:32
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@bpoiss can you confirm the path for my.cnf file. i am using xampp server. migration m1.9.3.6 to m2.3.3 Commented Jan 18, 2020 at 7:18