MySQL 5.6 Installation in RHEL 6

Download the rpm's to the /usr/local/src

wget https://downloads.skysql.com/archives/mysql-5.6/MySQL-client-5.6.12-1.el6.x86_64.rpm
wget https://downloads.skysql.com/archives/mysql-5.6/MySQL-server-5.6.12-1.el6.x86_64.rpm
wget https://downloads.skysql.com/archives/mysql-5.6/MySQL-shared-compat-5.6.12-1.el6.x86_64.rpm
wget https://downloads.skysql.com/archives/mysql-5.6/MySQL-devel-5.6.12-1.el6.x86_64.rpm
wget https://downloads.skysql.com/archives/mysql-5.6/MySQL-shared-5.6.12-2.el6.x86_64.rpm

rpm -e mysql-libs-5.1.71-1.el6.x86_64 --nodeps

rpm -ivh MySQL-client-5.6.12-1.el6.x86_64.rpm MySQL-devel-5.6.12-1.el6.x86_64.rpm MySQL-server-5.6.12-1.el6.x86_64.rpm MySQL-shared-5.6.12-2.el6.x86_64.rpm MySQL-shared-compat-5.6.12-1.el6.x86_64.rpm

/etc/init.d/mysql restart
Shutting down MySQL..                                      [  OK  ]
Starting MySQL.                                            [  OK  ]

Ref :- https://downloads.skysql.com/archive/index/p/mysql/v/5.6.12