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Postgres FD Implementation
Commit 0221bc97 authored by Bruce Momjian's avatar Bruce Momjian
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Mention increasing sort_mem during a restore.

parent 7d06fc01
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doc/src/sgml/runtime.sgml
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<!-- <!--
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.194 2003/07/22 20:29:13 momjian Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.195 2003/07/23 20:30:35 momjian Exp $
--> -->
<Chapter Id="runtime"> <Chapter Id="runtime">
...@@ -887,7 +887,9 @@ SET ENABLE_SEQSCAN TO OFF; ...@@ -887,7 +887,9 @@ SET ENABLE_SEQSCAN TO OFF;
times the value of <varname>SORT_MEM</varname>. Sort operations are used times the value of <varname>SORT_MEM</varname>. Sort operations are used
by <literal>ORDER BY</>, merge joins, and <command>CREATE INDEX</>. by <literal>ORDER BY</>, merge joins, and <command>CREATE INDEX</>.
Hash tables are used in hash joins, hash-based aggregation, and Hash tables are used in hash joins, hash-based aggregation, and
hash-based processing of <literal>IN</> subqueries. hash-based processing of <literal>IN</> subqueries. Because
<command>CREATE INDEX</> is used when restoring a database, it might
be good to temporary increase this value during a restore.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
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