61 lines
3.5 KiB
HTML
61 lines
3.5 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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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="ILE RPG input/output operations" />
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<meta name="abstract" content="Be aware of these restrictions when accessing remote VSAM data sets." />
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<meta name="description" content="Be aware of these restrictions when accessing remote VSAM data sets." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Identifier" content="rbae5rpgio" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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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>ILE RPG input/output operations</title>
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</head>
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<body id="rbae5rpgio"><a name="rbae5rpgio"><!-- --></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">ILE RPG input/output operations</h1>
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<div><p>Be aware of these restrictions when accessing remote
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VSAM data sets.</p>
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<div class="section"><ul><li>Records can be read or added by relative record number only when the remote
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VSAM data set is an RRDS. Random processing by relative record number can
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be used only when processing a VSAM RRDS.</li>
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<li>A request to delete a record in an ESDS does not work because ESDS is
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never delete-capable.</li>
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<li>The processing method cannot use the update or output specification in
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column 15 when the remote VSAM data set is a VSAM path. Instead, all add,
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update, or delete record requests must be made by using the base data set of the
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VSAM path. However, if the base data set of the VSAM path is a VSAM ESDS,
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the DELETE does not work.</li>
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<li>The READP operation code cannot be used to read the previous record in
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a VSAM path.</li>
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<li>Because VSAM KSDS does not allow duplicate keys, a request to add a record
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that duplicates the key of an existing record in a KSDS does not work.</li>
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<li>When accessing a KSDS, an update request that changes the key value of
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the record does not work.</li>
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<li>For ILE RPG programming language, *HIVAL can be used to obtain the last
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record of a remote KSDS. However, *HIVAL does not work when accessing a VSAM
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path.</li>
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</ul>
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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="rbae5xrpg.htm" title="These topics summarize the limitations that exist when using the iSeries System/36-Compatible RPG II or the ILE RPG programming language on an iSeries server to access remote VSAM data sets.">ILE RPG considerations</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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