70 lines
5.5 KiB
HTML
70 lines
5.5 KiB
HTML
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<!DOCTYPE html
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Use overrides" />
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<meta name="abstract" content="You can use overrides to temporarily change a file name, a device name associated with the file, or some of the other attributes of a file." />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>Use overrides</title>
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</head>
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<body id="rbal3override"><a name="rbal3override"><!-- --></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">Use overrides</h1>
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<div><p>You can use overrides to temporarily change a file name, a device
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name associated with the file, or some of the other attributes of a file. </p>
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<p>Overrides allow you to make minor changes in how a program functions. Overrides
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allow you to select the data, on which they operate, without recompiling the
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program. These topics explain how to use overrides on <span class="keyword">iSeries™</span>:</p>
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<p></p>
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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="rbal3ovrint.htm">Overrides: An overview</a></strong><br />
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An <dfn class="term">override</dfn> is a CL command that temporarily changes
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a file name, a device name, or remote location name associated with the file,
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or some of the other attributes of a file.</li>
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<li class="ulchildlink"><strong><a href="rbal3applyovr.htm">Apply overrides</a></strong><br />
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You can perform two general types of overrides, which are file overrides and overrides for program device entries.</li>
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<li class="ulchildlink"><strong><a href="rbal3deover.htm">Delete overrides</a></strong><br />
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When a program that has been called returns control to the calling program, the server deletes any overrides specified in the call level of the called program.</li>
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<li class="ulchildlink"><strong><a href="rbal3diover.htm">Display overrides</a></strong><br />
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You can use the Display Override (DSPOVR) command to display file overrides at the job level, the activation group level, and at multiple call levels for a job. You can display all file overrides or overrides for a specific file.</li>
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<li class="ulchildlink"><strong><a href="rbal3redirect.htm">Redirect files</a></strong><br />
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File redirection lets you use overrides to direct data input or output to a device of a different type; for example, to send data that was intended for a diskette to a printer instead. This use of overrides requires somewhat more foresight than the override applications listed above, because the program must be able to accommodate the different characteristics of the two devices involved.</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="rbal3workwith.htm" title="This topic describes the various tasks that can be used to ensure that files are used effectively.">Work with database files</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="rbal3openscope.htm" title="Files that are opened within the user default activation group are scoped to the call level number of the calling program (default). A call level number is a unique number that the server assigns to each call stack entry. Files that are opened within a named activation group are scoped to the activation group level (default).">Scope of opened files</a></div>
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<div><a href="rbal3dspopen.htm" title="You can display information about your open files by typing dspjob option(*opnf) on any command line and press Enter, or by typing wrkjob option(*opnf) on any command line and press Enter.">Display information about open files</a></div>
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</div>
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</div>
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</body>
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