74 lines
5.2 KiB
HTML
74 lines
5.2 KiB
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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<meta name="DC.Title" content="I/O feedback area" />
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<meta name="abstract" content="iSeries uses OS/400 messages and I/O feedback information to communicate the results of I/O operations to the program. The server updates the I/O feedback area for every successful I/O operation unless your program uses blocked record I/O." />
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<meta name="description" content="iSeries uses OS/400 messages and I/O feedback information to communicate the results of I/O operations to the program. The server updates the I/O feedback area for every successful I/O operation unless your program uses blocked record I/O." />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title> I/O feedback area</title>
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<body id="rbal3fedbk"><a name="rbal3fedbk"><!-- --></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"> I/O feedback area</h1>
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<div><p><span class="keyword">iSeries™</span> uses <span class="keyword">OS/400<sup>®</sup></span> messages and I/O feedback information
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to communicate the results of I/O operations to the program. The
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server updates the I/O feedback area for every successful I/O operation unless
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your program uses blocked record I/O.</p>
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<div class="section"><p>In that case, the server updates the feedback area only when it
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reads or writes a block of records. Some of the information reflects the last
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record in the block. Other information, such as the count of I/O operations,
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reflects the number of operations on blocks of records and not the number
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of records. See your high-level language information to determine if your
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program uses blocked record I/O.</p>
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</div>
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<div class="section"><p>The I/O feedback area consists of two parts: a common area and
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a file-dependent area.</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rbal3ciofa.htm">Common I/O feedback area</a></strong><br />
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The table in this topic shows the common I/O feedback area of iSeries.</li>
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<li class="ulchildlink"><strong><a href="rbal3ddiof.htm">I/O feedback area for ICF and display files</a></strong><br />
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The table in this topic shows the I/O feedback area for ICF and display files.</li>
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<li class="ulchildlink"><strong><a href="rbal3pddio.htm">I/O feedback area for printer files</a></strong><br />
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The table in this topic shows the I/O feedback area for printer files.</li>
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<li class="ulchildlink"><strong><a href="rbal3dbiof.htm">I/O feedback area for database files</a></strong><br />
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The table in this topic shows the I/O feedback area for database files.</li>
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<li class="ulchildlink"><strong><a href="rbal3getat.htm">Get attributes feedback area</a></strong><br />
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Performing the get attributes operation allows you to obtain certain information about a specific display device or ICF session.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbal3fba.htm" title="Tables in this section describe the Open feedback area and the I/O feedback area associated with any opened file.">Feedback area layouts</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rbal3openiofba.htm" title="The server monitors the status of a file in feedback areas once it has successfully opened the file. As the server performs operations on a file, it updates the feedback areas to reflect the latest status. These feedback areas give you greater control over applications and provide important information when errors occur.">Monitor file status with the open and I/O feedback area</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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