Resolving PacketTooBigException in MYSQL

Sometime if you use MySql you  may get the following error when,Installing and migration of your project.that error like  com.mysql.jdbc.PacketTooBigException:Packet for query is too large (4739923 > 1048576).
 For that you have to excute the following Query in MySql


                    set global max_allowed_packet=1817776