1. Dynatrace do not distribute JDK, but JRE.
2. Dynatrace delivers everything that is needed to run the software incl. JRE.
3. Dynatrace delivers only the software that was tested and verified by rigorous quality gates. For example, if there's a new JRE update available, it is shipped as soon as possible with following Dynatrace Manage releases.
4. Dynatrace does not support any user modifications to the software or custom updates as they were not tested.