ameter is
        only available if the <TT
CLASS="SYMBOL"
>WAL_DEBUG</TT
> macro was
        defined when <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> was
        compiled.
       </P
></DD
><DT
><A
NAME="GUC-IGNORE-CHECKSUM-FAILURE"
></A
><TT
CLASS="VARNAME"
>ignore_checksum_failure</TT
> (<TT
CLASS="TYPE"
>boolean</TT
>)</DT
><DD
><P
>        Only has effect if <A
HREF="app-initdb.html#APP-INITDB-DATA-CHECKSUMS"
>data checksums</A
> are enabled.
       </P
><P
>        Detection of a checksum failure du