S="TYPE"
>floating point</TT
>)</DT
><DD
><P
>        Sets the planner's estimate of the cost of a
        non-sequentially-fetched disk page.  The default is 4.0.
        This value can be overridden for tables and indexes in a particular
        tablespace by setting the tablespace parameter of the same name
        (see <A
HREF="sql-altertablespace.html"
>ALTER TABLESPACE</A
>).
       </P
><P
>        Reducing this value relative to <TT
CLASS="VARNAME"
>seq_page_cost</TT
>
        will cause the system 