Oracle Technical Track

How to Update JDK on Oracle Enterprise Linux from Version 1.6 to 1.7

Fahd Mirza
by Fahd Mirza
1 min read
May 30, 2013

JDK is the environment to develop Java programs, and updating Java on Linux boxes is a requirement which often comes up. The following lists the steps required to update the JDK from version 1.6.0_22 to 1.7.0_21. Step 1: Download the JDK rpm from the following link: https://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html Step 2: The current JDK version is: [root@test software]# java -version java version "1.6.0_22" OpenJDK Runtime Environment (IcedTea6 1.10.4) (rhel-1.41.1.10.4.el6-i386) OpenJDK Client VM (build 20.0-b11, mixed mode) Step 3: Run the following command to update the JDK: rpm -Uvh jdk-7u21-linux-i586.rpm [root@test software]# rpm -Uvh jdk-7u21-linux-i586.rpm Preparing... ########################################### [100%] 1:jdk ########################################### [100%] Unpacking JAR files... rt.jar... jsse.jar... charsets.jar... tools.jar... localedata.jar... plugin.jar... javaws.jar... deploy.jar... Step 4: Check the version: [root@test software]# java -version java version "1.6.0_22" OpenJDK Runtime Environment (IcedTea6 1.10.4) (rhel-1.41.1.10.4.el6-i386) OpenJDK Client VM (build 20.0-b11, mixed mode) Step 5: So the version is still pointing to the old one. We have to use the alternatives here to update the version. The newly installed Java is at this location /usr/java/jdk1.7.0_21/ : [root@test bin]# pwd /usr/java/jdk1.7.0_21/bin [root@test bin]# /usr/sbin/alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_21/bin/java 17021 Step 5: Now it should point to the latest version: [root@test bin]# java -version java version "1.7.0_21" Java(TM) SE Runtime Environment (build 1.7.0_21-b11) Java HotSpot(TM) Client VM (build 23.21-b01, mixed mode, sharing) That's it !!!
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