TION LIMIT</TT
> option is only enforced approximately;
   if two new sessions start at about the same time when just one
   connection <SPAN
CLASS="QUOTE"
>"slot"</SPAN
> remains for the role, it is possible that
   both will fail.  Also, the limit is never enforced for superusers.
  </P
><P
>   Caution must be exercised when specifying an unencrypted password
   with this command.  The password will be transmitted to the server
   in cleartext, and it might also be logged in the client's command
   histor