Sun Java Enterprise System 2005Q4 Release Notes

If Message Queue is installed with Java ES installer you must use uninstaller to uninstall (no issue ID)

If you remove the Linux RPMs directly, the next time the installer is run, it may see Message Queue as still being installed and not behave correctly.

Solution If you have already removed the Message Queue RPMs manually, you must uninstall Message Queue using the uninstaller. Run the uninstaller and select Message Queue components for removal.