The binaries and other metadata and utility scripts in the Oracle home and Domain home, such as RCU or Configuration Wizard, use a JDK version that was used while installing the software and continue to refer to the same version of the JDK. The JDK path is stored in a variable called JAVA_HOME which is centrally located in .globalEnv.properties file inside the
The utility scripts such as config.sh|cmd, launch.sh, or opatch reside in the ORACLE_HOME, and when you invoke them, they refer to the JAVA_HOME variable located in .globalEnv.properties file. To point these scripts and utilities to the newer version of JDK, you must update the value of the JAVA_HOME variable in the .globalEnv.properties file by following the directions listed in Updating the JDK Location in an Existing Oracle Home.
Specify the path to the newer JDK on the Domain Mode and JDK screen while running the Configuration Wizard.
For example, consider that you installed Oracle Fusion Middleware Infrastructure with the JDK version 8u121. So while configuring the WebLogic domain with the Configuration Assistant, you can select the path to the newer JDK on the Domain Mode and JDK screen of the Configuration Wizard. Example:
Manually locate the files that have references to the JDK using
findstr(Windows) commands and update each reference. See Updating the JDK Location in an Existing Domain Home.
Note:If you install the newer version of the JDK in the same location as the existing JDK by overwriting the files, then you don’t need to take any action.