56 lines
4.0 KiB
HTML
56 lines
4.0 KiB
HTML
<?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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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Ignore the keyed sequence access path" />
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<meta name="abstract" content="If a key field is defined for the file, the system automatically uses the keyed sequence access path. However, sometimes, you can use the ACCPTH parameter to ignore the keyed sequence access path for better performance." />
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<meta name="description" content="If a key field is defined for the file, the system automatically uses the keyed sequence access path. However, sometimes, you can use the ACCPTH parameter to ignore the keyed sequence access path for better performance." />
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<meta name="DC.subject" content="ignoring, keyed sequence access path, access path, keyed sequence, ACCPTH (Access Path) parameter, Access Path (ACCPTH) parameter, parameter, ACCPTH (Access Path)" />
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<meta name="keywords" content="ignoring, keyed sequence access path, access path, keyed sequence, ACCPTH (Access Path) parameter, Access Path (ACCPTH) parameter, parameter, ACCPTH (Access Path)" />
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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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<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>Ignore the keyed sequence access path</title>
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</head>
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<body id="rbafopreign"><a name="rbafopreign"><!-- --></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">Ignore the keyed sequence access path</h1>
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<div><p>If a key field is defined for the file, the system automatically
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uses the keyed sequence access path. However, sometimes, you can use the ACCPTH
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parameter to ignore the keyed sequence access path for better performance.</p>
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<p>You can use the ACCPTH parameter to ignore the keyed sequence access path
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and process the file in arrival sequence. You can tell the system to ignore
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the keyed sequence access path in some high-level languages, or on the Open
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Database File (OPNDBF) command. </p>
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<div class="p">When you ignore the keyed sequence access path, operations that read data
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by key are not allowed. Operations are done sequentially along the arrival
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sequence access path. (If this option is specified for a logical file with
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select/omit values defined, the arrival sequence access path is used and only
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those records meeting the select/omit values are returned to the program.
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The processing is done as if the DYNSLT keyword were specified for the file.) <div class="note"><span class="notetitle">Note:</span> You
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cannot ignore the keyed sequence access path for logical file members that
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are based on more than one physical file member.</div>
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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="rbafoprocop.htm" title="These topics describe several runtime processing options.">File processing options</a></div>
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</div>
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</div>
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</body>
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</html> |