SUNScholar/Java Version 7
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Contents
Introduction
DSpace versions => 4.2 require java version 7. Java version 7 is the default with Ubuntu 14.04 LTS, but not Ubuntu 12.04 LTS.
Follow the instructions below to install and setup java 7 as default on an Ubuntu 12.04 LTS server.
This should be done before you attempt to upgrade to DSpace 4.2.
Procedure
Install Java7
- Install Java 7
sudo apt-get install openjdk-7-jdk openjdk-7-jre
- Remove default java symlink
sudo cd /usr/lib/jvm
sudo rm default-java
Select 64bit or 32bit
- Add new symlink depending on 32 or 64 bit architecture
sudo ln -s java-1.7.0-openjdk-amd64 default-java
- or for a 32 bit server
sudo ln -s java-1.7.0-openjdk-i386 default-java
Select 64bit or 32bit
- Setup default java binaries depending on 32 or 64 bit architecture
sudo update-java-alternatives -s java-1.7.0-openjdk-amd64
- or for a 32 bit server
sudo update-java-alternatives -s java-1.7.0-openjdk-i386
Post-installation checks
- Check java version
java -showversion
The following should display
java version "1.7.0_65" OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu0.12.04.1) OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
Restart Tomcat
- Restart the Tomcat6 server
sudo service tomcat6 restart