By default, the viewroot and VOB file systems are mounted with setuid and setgid disabled. If you must enable hosts to mount these file systems with setuid and setgid enabled (for example, if you run setuid tools from a VOB), you can either configure your release area with the site_prep script to make this the default for all hosts, or you can run ccase-home-dir/etc/utils/change_suid_mounts to enable it for a single host.
The effects of running change_suid_mounts on a host do not persist across installations, and you must stop and restart Rational® ClearCase® on the host after running the script.