Uninstall linux's own openjdk and install sun jdk

rpm -qa | grep java

rpm -e --nodeps java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86_64
rpm -e --nodeps tzdata-java-2013g-1.el6.noarch
rpm - e --nodeps java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.x86_64


mkdir /usr/java

cp /home/data/jdk-7u79-linux-x64.rpm /usr/java/

rpm -ivh jdk-7u79-linux-x64.rpm

Add a jdk.sh under profile.d and add the following content
export JAVA_HOME=/usr/java/jdk1.7.0_79
export CLASSPATH=.:$JAVA_HOME/jre/lib/ rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

source /etc/profile