T
><TT
CLASS="VARNAME"
>debug_deadlocks</TT
> (<TT
CLASS="TYPE"
>boolean</TT
>)</DT
><DD
><P
>        If set, dumps information about all current locks when a
        deadlock timeout occurs.
       </P
><P
>        This parameter is only available if the <TT
CLASS="SYMBOL"
>LOCK_DEBUG</TT
>
        macro was defined when <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> was
        compiled.
       </P
></DD
><DT
><TT
CLASS="VARNAME"
>log_btree_build_stats</TT
> (<TT
CLASS="TYPE"
>boolean</TT
>)</DT
><DD
><P
>