a
        password before connecting to a database.
       </P
><P
>        This option is never essential, since
        <SPAN
CLASS="APPLICATION"
>pg_dumpall</SPAN
> will automatically prompt
        for a password if the server demands password authentication.
        However, <SPAN
CLASS="APPLICATION"
>pg_dumpall</SPAN
> will waste a
        connection attempt finding out that the server wants a password.
        In some cases it is worth typing <TT
CLASS="OPTION"
>-W</TT
> to avoid the extra
        co