Apple announced that macOS 10.14 Mojave is the final release to support their Java SE 6 runtime.
As a result, upgrading to macOS 10.15 Catalina causes JMP 14.1 and older versions to become unable to connect to SAS Metadata and Workspace servers.
Upgrading to JMP 14.2 (or newer releases) corrects the issue.
[Previously JMP Note 64964]