85 lines
5.4 KiB
HTML
85 lines
5.4 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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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Automatic decompression of objects" />
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<meta name="abstract" content="Compressed objects shipped in the i5/OS or other IBM licensed programs are decompressed by the system after the licensed programs are installed." />
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<meta name="description" content="Compressed objects shipped in the i5/OS or other IBM licensed programs are decompressed by the system after the licensed programs are installed." />
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<meta name="DC.subject" content="automatic decompression, object, decompressing, after operating system installation, frequently-used objects, description" />
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<meta name="keywords" content="automatic decompression, object, decompressing, after operating system installation, frequently-used objects, description" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Automatic decompression of objects</title>
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</head>
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<body id="autod"><a name="autod"><!-- --></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">Automatic decompression of objects</h1>
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<div><p>Compressed objects shipped in the i5/OS™ or other IBM<sup>®</sup> licensed programs are decompressed by
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the system <em>after the licensed programs are installed</em>.</p>
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<p>The decompression occurs only when sufficient storage is available on the
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system.</p>
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<p>System jobs called QDCPOBJx are automatically started by the system to
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decompress objects.</p>
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<div class="p">The number of QDCPOBJ jobs is based on number of processors + 1. The jobs
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are system jobs running at priority 60 which can't be changed, ended or held
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by the user. A QDCPOBJx job may be in one of the following statuses, which
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are from the <span class="cmdname">Work Active Job (WRKACTJOB)</span> command: <ul><li>RUN (running): The job is actively decompressing objects.</li>
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<li>EVTW (event wait): The job is not actively decompressing objects. The
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job is active in case more objects need to decompressed (i.e. additional licensed
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programs are installed).</li>
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<li>DLYW (delay wait): The job is temporarily halted. The following situations
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could cause the QDCPOBJx jobs to halt: <ul><li>The system is running in restricted state (i.e. ENDSYS or ENDSBS *ALL
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was executed)</li>
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<li>A licensed program was just installed from the "Work with Licensed Programs"
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display. The job is in a delay wait state for a maximum of 15 minutes prior
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to starting to decompress objects.</li>
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</ul>
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</li>
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<li>LCKW (lock wait): The job is waiting for an internal lock. Typically,
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this occurs when one QDCPOBJ job is in DLYW state.</li>
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</ul>
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</div>
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<div class="p">The following storage requirements apply if the operating system was installed
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over an existing operating system: <ul><li>The system must have greater than 250 megabytes of unused storage for
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the QDCPOBJx jobs to start.</li>
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<li>On a system with available storage of greater than 750MB, the jobs are
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submitted to decompress all system objects just installed.</li>
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<li>On a system with available storage of less than 250MB, jobs are not submitted,
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and the objects are decompressed as they are used.</li>
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<li>On a system with available storage between 250MB and 750MB, only frequently-used
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objects are automatically decompressed.</li>
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</ul>
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</div>
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<p><strong><em>Frequently-used objects</em></strong> are objects that have been used at
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least five times and the last use was within the last 14 days. The remaining
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low-use objects remain compressed.</p>
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<p>The system must have greater than 1000MB of unused storage if the operating
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system is installed on a system that has been initialized using options 2,
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Install Licensed Internal Code and Initialize the system, from the Install
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Licensed Internal Code (LIC) display.</p>
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<p>If QDCPOBJx jobs are active at the last system termination, the jobs are
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started again at the time of the next IPL.</p>
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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="cmpdmp.htm" title="You can use the Compress Object (CPROBJ) command to compress selected objects in order to save disk space on the system or you can use the Decompress Object (DCPOBJ) command to decompress objects that have been compressed.">Compress or decompress objects</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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