o  To use the RMU Show Users command for a specified database,
       you must have the RMU$SHOW, RMU$BACKUP, or RMU$OPEN privilege
       in the root file access control list (ACL) of the database, or
       the OpenVMS WORLD privilege.

       To use the RMU Show Users command without specifying a
       database, you must have the RMU$SHOW, RMU$BACKUP, or RMU$OPEN
       privilege in the root file ACL of the database or databases,
       and the OpenVMS WORLD privilege.

    o  When the database monitor is completely idle, identified in
       the output of the RMU Show Users command by the "no databases
       accessed on this node" message, the number of available
       monitor messages should be 1 less than the maximum. During
       periods of monitor activity, it is normal for the number
       of available monitor buffers to be less than the maximum,
       depending on how much work remains for the monitor to process.