134 lines
7.8 KiB
HTML
134 lines
7.8 KiB
HTML
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<meta name="DC.Title" content="PL/I open file requests" />
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<meta name="abstract" content="The i5/OS DDM user can access remote CICS files with PL/I programs." />
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<title>PL/I open file requests</title>
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<body id="rbae5plop"><a name="rbae5plop"><!-- --></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">PL/I open file requests</h1>
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<div><p>The <span class="keyword">i5/OS™</span> DDM
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user can access remote CICS<sup>®</sup> files with PL/I programs.</p>
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<div class="section"><p> When opening the file with the RECORD file attribute, the program
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must use the file attributes specified in the table below. By noting the values
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that appear in this table, you can determine the difference between accessing
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an <span class="keyword">iSeries™</span> database file and
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a remote VSAM data set.</p>
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</div>
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<div class="section"> <div class="note"><span class="notetitle">Note:</span> Remote files can also be opened with the PL/I STREAM file
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attribute. However, if the STREAM file attribute is used to open a VSAM KSDS,
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a server message occurs. This happens because records in a VSAM KSDS cannot
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be processed in arrival sequence.</div>
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</div>
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<div class="section"><p>Unless the CICS system has replaced the CICS/DDM exclusive file
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locking program, you cannot use the EXCL and EXCLRD file locking options for
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the ENVIRONMENT parameter when opening a remote VSAM data set. </p>
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</div>
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<div class="tablenoborder"><a name="rbae5plop__rbae5figpl"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rbae5plop__rbae5figpl" width="100%" frame="border" border="1" rules="all"><caption>Table 1. PL/I file attributes</caption><thead align="left"><tr><th rowspan="2" align="left" valign="bottom" width="20%" id="d0e50"> PL/I file attributes</th>
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<th colspan="4" align="center" valign="bottom" id="d0e52">VSAM data
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set organization</th>
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</tr>
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<tr><th align="left" valign="bottom" width="20%" id="d0e55">ESDS</th>
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<th align="left" valign="bottom" width="20%" id="d0e57">RRDS</th>
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<th align="left" valign="bottom" width="20%" id="d0e59">KSDS</th>
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<th align="left" valign="bottom" width="20%" id="d0e61">VSAM Path</th>
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</tr>
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</thead>
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<tbody><tr><td align="left" valign="top" width="20%" headers="d0e50 ">SEQUENTIAL</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">R</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">O</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">DIRECT</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">E</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">O</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">SEQL KEYED</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">E</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">O</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">INPUT</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">O</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">OUTPUT</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">E</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">UPDATE</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">O</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">E</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">E</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">CONSECUTIVE</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">R</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">R</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">E</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">E</td>
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</tr>
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<tr><td align="left" valign="top" width="20%" headers="d0e50 ">INDEXED</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e55 ">–</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e57 ">–</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e59 ">R</td>
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<td align="left" valign="top" width="20%" headers="d0e52 d0e61 ">R</td>
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</tr>
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<tr><td colspan="5" align="left" valign="top" headers="d0e50 d0e52 d0e55 d0e57 d0e59 d0e61 "><p>Where: </p>
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<dl><dt class="dlterm">R</dt>
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<dd>Shows the attribute is required for accessing the VSAM data set.</dd>
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<dt class="dlterm">O</dt>
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<dd>Shows the attribute is optional for accessing the VSAM data set.</dd>
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<dt class="dlterm">E</dt>
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<dd>Shows the attribute is allowed by PL/I but the open fails when accessing
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the VSAM data set.</dd>
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<dt class="dlterm">–</dt>
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<dd>Shows the option is valid for keyed files only.</dd>
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</dl>
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</td>
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</tr>
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</tbody>
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</table>
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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="rbae5xplcon.htm" title="These topics summarize the limitations that exist when using PL/I to access remote VSAM data sets from an iSeries server. These limitations should be considered in addition to those already stated in this topic collection.">PL/I considerations</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rbae5pliio.htm" title="This topic discusses the types of PL/I input/output requests and their restrictions.">PL/I input/output requests</a></div>
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</div>
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</div>
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</body>
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