If you need to upgrade your Java version please proceed as follows:

• Backup the cacerts file from the location of the existing JDK …/jdk_<old>/jre/lib/security/ or create a new cacerts file including the necessary certificates (e.g. company root certificate).
• Install JDK of new Java version on server. Please refer to the system requirements 7.6 for supported JDK editions.
• Copy the cacerts file to the location of the new JDK …/jdk_<new>/jre/lib/security/

• Change JAVA_HOME in <stages>\config.bat according to the location of the new JDK and run <stages>\bin\reinstallservice.bat (as admin).

• Execute the following as root or with sudo
• Create new file that is getting loaded when system is starting/restarting

touch /etc/profile.d/java_home.sh

• Fill the file with variable definition to have an always up to date definition of the JDK in JAVA_HOME and PATH env. variables

cat <<EOF> /etc/profile.d/java_home.sh
export JAVA_HOME=\$(readlink -f /usr/bin/java | sed "s:/bin/java::")
export PATH=\$PATH:\$JAVA_HOME/bin
EOF

• Reload the environment variables with the following command or restart the system

source /etc/profile