: The embedded instance of Oracle WebLogic Server 12.2.1.4 runs on a Java SE 8 runtime engine. 🛠️ Step-by-Step Installation Configuration 1. Verify Your Java Baseline
Oracle's official documentation states that this release of JDeveloper requires Java SE Development Kit (JDK) 8. The Oracle Certification page lists as the required version. This includes update 191 and all subsequent updates.
By locking your environment down to a stable 64-bit release of Java 8, you will ensure optimal performance, reliable local deployments, and smooth operations across the entire Oracle Fusion Middleware 12c ecosystem. jdeveloper 12.2.1.4 java version
Are you planning to connect it to a or just use the integrated one?
Install to a path without spaces (e.g., C:\Java\jdk1.8.0_202 on Windows or /usr/lib/jvm/jdk8u202 on Linux). : The embedded instance of Oracle WebLogic Server 12
Ensure your JAVA_HOME environment variable is pointing strictly to a JDK 8 folder. If you have multiple Java versions, you may need to edit the jdev.conf file located in the jdeveloper/jdev/bin directory. Look for the line: SetJavaHome /path/to/jdk And update it to point to your JDK 8 installation.
Possibly, but late JDK 8 updates (post-April 2019) contain security backports that may introduce new restrictions. Some users report that JDeveloper’s integrated profiler stops working. Test thoroughly. The Oracle Certification page lists as the required version
: Java 9 and newer versions introduced strong encapsulation via the Java Platform Module System (JPMS). This architecture blocks illegal reflective access to core components, causing JDeveloper components to throw IllegalAccessError faults or fail validation steps.
