<P
>      Fix <TT
CLASS="LITERAL"
>LISTEN</TT
>/<TT
CLASS="LITERAL"
>NOTIFY</TT
> to cope better with I/O
      problems, such as out of disk space (Tom Lane)
     </P
><P
>      After a write failure, all subsequent attempts to send more
      <TT
CLASS="LITERAL"
>NOTIFY</TT
> messages would fail with messages like
      <SPAN
CLASS="QUOTE"
>"Could not read from file "pg_notify/<TT
CLASS="REPLACEABLE"
><I
>nnnn</I
></TT
>" at
      offset <TT
CLASS="REPLACEABLE"
><I
>nnnnn</I
></TT
>: Success"</SPAN
>.
   