Questions about the JVM and Tomcat upgrades

[andreas]

@Ryan_Stille

Is there documentation about which JVM versions can be used for Lucee?

As far as I understand, a JVM is supported as long as the underlying Java version is supported.

You can find the actual information about the supported Java versions from the Lucee docs here.

@Ryan_Stille

Does the bundled JVM ever get updated when I use the Lucee updater inside the Lucee admin?

No. The admin only updates the Lucee servlet. You need to update the JDK by yourself. But updating the jdk is fairly easy. You just need to make the Tomcat service point to the new JDK directory.

That is how I usually do it, without changing any configuration or service settings:

1. download and unzip the new AdoptOpenJDK to the Lucee directory
2. stop the Tomcat service
3. rename the working jdk directory (e.g. c:\lucee\jdk to c:\lucee\jdk_bak
4. rename the downloaded jdk directory to the actual working directory name (e.g. c:\lucee\downloadedJDK to c:\lucee\jdk
5. restart Tomcat
6. Watch the logs at c:\lucee\tomcat\logs

Doing it that way you won’t need to edit OS service configurations and you still have the copy of the old jdk sitting in your Lucee directory.

@Ryan_Stille

Does the bundled Tomcat ever get updated?

No, it’s also on you. Please find some information about updating Tomcat from this community post about Tomcat updates and upgrades (please read all user posts)