92 lines
6.4 KiB
HTML
92 lines
6.4 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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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Output spooling" />
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<meta name="abstract" content="Output spooling can be used for both printer and diskette devices. Output spooling sends job output to disk storage instead of sending it directly to a printer or diskette output device. Output spooling allows the job that produces the output to continue processing without consideration for the speed or availability of output devices." />
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<meta name="description" content="Output spooling can be used for both printer and diskette devices. Output spooling sends job output to disk storage instead of sending it directly to a printer or diskette output device. Output spooling allows the job that produces the output to continue processing without consideration for the speed or availability of output devices." />
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<meta name="DC.Relation" scheme="URI" content="rzatakickoff.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzakssplfileoutput" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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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>Output spooling</title>
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</head>
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<body id="rzakssplfileoutput"><a name="rzakssplfileoutput"><!-- --></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">Output spooling</h1>
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<div><p>Output spooling can be used for both printer and diskette devices.
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Output spooling sends job output to disk storage instead of sending it directly
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to a printer or diskette output device. Output spooling allows the job that
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produces the output to continue processing without consideration for the speed
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or availability of output devices. </p>
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<p>Additionally, output spooling allows the server to produce output on multiple
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output devices, such as printer and diskette devices, in an efficient manner.
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It does this by sending the output of a job destined for a printer to disk
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storage. This process breaks a potential job limitation imposed by the availability
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or speed of the output devices.</p>
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<p>The main elements of output spooling are:</p>
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<ul><li><strong>Device description:</strong> A description of the printer device.</li>
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<li><strong>Spooled file:</strong> A file containing spooled output records that are
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to be processed on an output device.</li>
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<li><strong>Output queue:</strong> An ordered list of spooled files.</li>
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<li><strong>Writer:</strong> A program that sends files from an output queue to a device.</li>
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<li><strong>Application program:</strong> A high-level language program that creates
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a spooled file using a device file with the spooling attribute specified as
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SPOOL(*YES).</li>
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<li><strong>Device file:</strong> A description of the format of the output, and a list
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of attributes that describe how the server should process the spooled file.</li>
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</ul>
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<p>Output spooling functions are performed by the server without requiring
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any special operations by the program that produces the output. When a device
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file is opened by a program, the operating system determines whether the output
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is to be spooled. When a printer file specifying spooling is opened, the spooled
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file containing the output of the program is placed on the appropriate output
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queue in the server.</p>
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<p>A spooled file can be made available for printing when the printer file
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is opened, when the printer file is closed, or at the end of the job. A printer
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writer is started in the spooling subsystem to send the records to the printer.
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The spooled file is selected from an output queue. </p>
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<div class="section"><h4 class="sectiontitle">Spooling device descriptions</h4><p>Device descriptions
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must be created for each printer and diskette device in order to define that
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device to the server. Printer device descriptions are created using the Create
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Device Description for Printer (<span class="cmdname">CRTDEVPRT</span>) command; diskette
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device descriptions are created using the Create Device Description for Diskette
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(<span class="cmdname">CRTDEVDKT</span>) command.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">File redirection of spooled files</h4><p>File redirection
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occurs when a spooled file is sent to an output device other than the one
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for which it was originally intended. File redirection can involve devices
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that process different media (such as printer output sent to a diskette device)
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or devices that process the same type of media but are of different devices
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types (such as 5219 Printer output sent to a 4224 Printer).</p>
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<p>Depending
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on the new output device for the spooled file, the file can be
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processed just as it would have been on the originally specified device. However,
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differences in devices often cause the output to be formatted differently.
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In these cases, the server sends an inquiry message to the writer's message
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queue to inform you of the situation and allow you to specify whether you
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want printing to continue. </p>
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<p></p>
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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="rzatakickoff.htm" title="Spooling is a system function that saves data for later processing or printing. This data is stored in a spooled file. Spooled files work in a similar manner to tape files or other device files. Spooled files allow you to manage your data targeted for externally attached devices such as a printer.">Spooled files</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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