I had a similar issues when I deployed the DB connect to Oracle linux. Per the error, the Java path is setup for JAVA JRE, if so, please update the path for JDK . I think we cannot have the both of them on the path, thus I am not really sure, because I did not test it. I remembered that I was only able to successfully deploy the DBconnect after the JDK was properly installed and the Path was setup as well. I never deploy DB connect to Ubuntu, but I believe the behavior can be similar. If possible run this installation in a sandbox to do not damage anything on the production environment.