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Mention increasing sort_mem during a restore.
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doc/src/sgml/runtime.sgml

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

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