SET GLOBAL max_allowed_packet doesn't work

Question

I found out how to change the default value of max_allowed_packet in MySQL using SET GLOBAL. However, each time I used this command, the default va

Answer 1

After running

set global max_allowed_packet=1000000000;

you have to restart mysql before

SHOW VARIABLES LIKE 'max_allowed_packet'

will show the new value.

I have this issue when restarting mysql through the MAC OSX system preferences and the value hadn't changed. So by logging into mysql via console

mysql -u root -p

changing it and then restarting mySql seemed to work. Might have been a OS X quirk though.