58 lines
4.3 KiB
HTML
58 lines
4.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Page interactively displayed data with REFRESH(*FORWARD)" />
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<meta name="abstract" content="In large tables, paging performance is typically degraded because of the REFRESH(*ALWAYS) parameter on the Start SQL (STRSQL) command which dynamically retrieves the latest data directly from the table. Paging performance can be improved by specifying REFRESH(*FORWARD)." />
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<meta name="description" content="In large tables, paging performance is typically degraded because of the REFRESH(*ALWAYS) parameter on the Start SQL (STRSQL) command which dynamically retrieves the latest data directly from the table. Paging performance can be improved by specifying REFRESH(*FORWARD)." />
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<meta name="DC.subject" content="improving performance, paging interactively displayed data, paging, interactively displayed data, performance improvement, paging interactively displayed data, interactively displayed data, paging, affect on performance, data, interactively displayed to improve performance" />
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<meta name="keywords" content="improving performance, paging interactively displayed data, paging, interactively displayed data, performance improvement, paging interactively displayed data, interactively displayed data, paging, affect on performance, data, interactively displayed to improve performance" />
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<meta name="DC.Relation" scheme="URI" content="progtech.htm" />
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<meta name="DC.Relation" scheme="URI" content="../cl/strsql.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="refreshfwd" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Page interactively displayed data with REFRESH(*FORWARD)</title>
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</head>
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<body id="refreshfwd"><a name="refreshfwd"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Page interactively displayed data with REFRESH(*FORWARD)</h1>
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<div><p>In large tables, paging performance is typically degraded because
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of the REFRESH(*ALWAYS) parameter on the <span class="cmdname">Start SQL (STRSQL) </span>command
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which dynamically retrieves the latest data directly from the table. Paging
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performance can be improved by specifying REFRESH(*FORWARD).</p>
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<div class="section"><p>When interactively displaying data using REFRESH(*FORWARD), the
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results of a select-statement are copied to a temporary table as you page
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forward through the display. Other users sharing the table can
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make changes to the rows while you are displaying the select-statement results.
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If you page backward or forward to rows that have already been displayed,
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the rows shown are those in the temporary table instead of those in the updated
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table.</p>
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</div>
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<div class="section"><p>The refresh option can be changed on the Session Services display.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="progtech.htm" title="By changing the coding of your queries, you can improve their performance.">Programming techniques for database performance</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../cl/strsql.htm">Start SQL (STRSQL) command</a></div>
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</div>
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</div>
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</body>
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</html>
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