ue a
        <TT
CLASS="COMMAND"
>SET ROLE</TT
> <TT
CLASS="REPLACEABLE"
><I
>rolename</I
></TT
>
        command after connecting to the database. It is useful when the
        authenticated user (specified by <TT
CLASS="OPTION"
>-U</TT
>) lacks privileges
        needed by <SPAN
CLASS="APPLICATION"
>pg_dumpall</SPAN
>, but can switch to a role with
        the required rights.  Some installations have a policy against
        logging in directly as a superuser, and use of this option allows
        dumps 