3</TT
>, <TT
CLASS="LITERAL"
>DEBUG2</TT
>, <TT
CLASS="LITERAL"
>DEBUG1</TT
>, and
        <TT
CLASS="LITERAL"
>LOG</TT
>.  The default, <TT
CLASS="LITERAL"
>LOG</TT
>, does not affect
        logging decisions at all.  The other values cause recovery-related
        debug messages of that priority or higher to be logged as though they
        had <TT
CLASS="LITERAL"
>LOG</TT
> priority; for common settings of
        <TT
CLASS="VARNAME"
>log_min_messages</TT
> this results in unconditionally sending
      