This article details the required Java version, installation tips, and the supported environment for JDeveloper 12.2.1.4. The Certified Java Version for JDeveloper 12.2.1.4

environment variable to point to your JDK installation directory. Verify the installation by running java -version

: C:\Users\ \AppData\Roaming\JDeveloper\12.2.1.4.0\product.conf

Yes. Oracle JDeveloper 12.2.1.4 was tested primarily on Oracle JDK 8, but OpenJDK 8 (Adoptium/Temurin, RedHat, Amazon Corretto) generally works. The only potential issue is with Oracle-specific JDBC driver optimizations, which are negligible.

java version "1.8.0_211" Java(TM) SE Runtime Environment (build 1.8.0_211-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode) Use code with caution. 2. Launching the Installer via JDK

On Windows systems, JDeveloper 12.2.1.4 is typically launched via the Start Menu shortcut or by running the jdev.exe executable. The IDE has been tested and certified on Windows x64 versions 7 through 11, as well as Windows Server 2019 and 2022.

Do not do this. Use JDK 8.

If your version is below 1.8.0_211 , download the latest Java SE 8 JDK from the Oracle Java SE 8 Downloads page.

You compiled a library or project using JDK 11+ and tried to import or run it within JDeveloper 12.2.1.4.

If you are currently setting up your environment, I can help you with: Locating the certified

When running the JDeveloper generic installer via the command line: java -jar jdev_suite_122140.jar Use code with caution.

It is worth noting that while the certification primarily focuses on Oracle JDK, Oracle provides support for running JDeveloper on any platform that has Java SE Development Kit (JDK) 8 installed.

A common mistake is attempting to run JDeveloper 12.2.1.4 on Java 11, 17, or 21.

Edit jdev.conf and explicitly define a verified 64-bit JDK 8 path using the SetJavaHome directive.

Navigate to jdeveloper/jdeveloper.exe (Windows) or ./jdeveloper (Linux/macOS). The IDE will automatically detect JAVA_HOME . If not, you can force it by editing jdeveloper.conf :