In this post I will explain you how to install Oracle SOA Suite 12c. Download latest version of SOA 12c from oracle OTN. Download java 7 and install it to your machine If you don't have java 7 installed, your can download it from below path http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html The further installation is shown in Windows OS. You need to create a JAVA_HOME environment variable. Follow the below path to set JAVA_HOME : Click on Advanced System Settings, go to Advance tab and click on Environment Variables. Click on New under User Variables. Click ok and Save it. Now java 1.7 has been setup in your machine. We are ready to install JDeveloper 12c. Unzip fmw_12.1.3.0.0_soaqs_Disk1_1of1.zip file which you have downloaded from OTN. Now open a command prompt as a administrator Navigate to the installation folder and run command " %JAVA_HOME%\bin\java -jar fmw_12.1...