​Question:

Do I need to use Java supported by Oracle for RMS?

Answer:

As of RMS 4.8.x OpenJDK is also supported.  OpenJDK is a release from Oracle, as-is with no support.  Oracle, with a paid subscription, does provide support of their most current and select previous Java releases.  For either Oracle's supported version or OpenJDK, be sure to install the required version for RMS.

Click here to learn how to install RMS with OpenJDK.

Link:

https://help.harmanpro.com/using-openjdk11-with-rms-4-6