87 lines
4.8 KiB
HTML
87 lines
4.8 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" 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="dc.language" scheme="rfc1766" 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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<meta name="dc.date" scheme="iso8601" content="2005-09-06" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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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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<title>Spooled output schedule (SCHEDULE) parameter</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="rzalusched"></a>
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<h4 id="rzalusched">Spooled output schedule (SCHEDULE) parameter</h4>
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<p>The SCHEDULE parameter can be specified with one of three values to control
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when the spooled file is available for a writer to produce the file. </p>
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<dl>
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<dt class="bold">*FILEEND</dt>
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<dd>Specifies that the spooled file is made available to the writer when
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the file is closed
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</dd>
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<dt class="bold">*JOBEND</dt>
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<dd>Specifies that the spooled file is made available to the writer when
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the job that created the spooled file is ended
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</dd>
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<dt class="bold">*IMMED</dt>
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<dd>Specifies that the spooled file is made available to the writer when
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the file is opened
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</dd>
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</dl>
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<p><span class="bold">*JOBEND considerations</span></p>
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<p>The SCHEDULE(*JOBEND) spooled files of a job are grouped together on their
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output queues when the job completes. All SCHEDULE(*JOBEND) spooled files
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of the same job that are grouped together on a queue are produced together
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by the writer. Another spooled file can be added to the top of the queue
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while the writer is producing a SCHEDULE(*JOBEND) spooled file. After a writer
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produces one file of a job that is SCHEDULE(*JOBEND), it checks the following
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file on the queue. If this file is from the same job and is also SCHEDULE(*JOBEND),
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the writer produces it next. However, if the file is from a different job
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or is not SCHEDULE(*JOBEND), the first file on the queue is produced next.</p>
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<p>If you want your SCHEDULE(*JOBEND) spooled files grouped together on a
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SEQ(*FIFO) output queue, you must be careful not to separate the spooled files.
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File operations such as HLDSPLF, CHGSPLFA, and RLSSPLF are performed one
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at a time (even from a Work with Output Queue (WRKOUTQ) display). If operations
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to other files on the queue are done at the same time, your spooled files
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can be separated on a SEQ(*FIFO) queue. If your SCHEDULE(*JOBEND) spooled
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files separate, you can regroup them by changing their output priority with
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the Change Job (CHGJOB) command.</p>
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<p><span class="bold">*IMMED considerations</span></p>
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<p>When a writer is producing a SCHEDULE(*IMMED) spooled file, it might catch
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up to the program producing the output. When this happens, the writer must
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wait for the program to produce more output. Because of this, you should
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be careful using *IMMED for the schedule option. When this happens, the writer
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cannot process other spooled files. Moreover, the device cannot be used for
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any other work.</p>
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<p>Normally, spooled files that are created with SCHEDULE(*IMMED) specified
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are assigned a smaller internal buffer than spooled files that are created
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with SCHEDULE(*JOBEND) or SCHEDULE(*FILEEND) specified. Using SCHEDULE(*IMMED)
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to assign a smaller internal buffer might allow the spooled data to be produced
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sooner, but can also adversely affect performance because more disk operations
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are needed for the same amount of spooled data.</p>
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<p>A large internal buffer is always used for spooled print files that use
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certain special device requirements. Special device requirements include: </p>
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<ul>
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<li>Defined characters</li>
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<li>Graphics 4214</li>
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<li>Graphics 4234</li>
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<li>Graphics 522x</li></ul>
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<p>Changing the SCHEDULE parameter of a spooled file with the CHGSPLFA command
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does not affect the internal buffers used for that file.</p>
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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