65 lines
4.3 KiB
HTML
65 lines
4.3 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 name="DC.Type" content="reference" />
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<meta name="DC.Title" content="DRDA and DDM listener program" />
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<meta name="abstract" content="The DDM listener program runs in a batch job. There is a one-to-many relationship between it and the actual server jobs; there is one listener and potentially many DDM server jobs. The server jobs are normally prestart jobs. The listener job runs in the QSYSWRK subsystem." />
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<meta name="description" content="The DDM listener program runs in a batch job. There is a one-to-many relationship between it and the actual server jobs; there is one listener and potentially many DDM server jobs. The server jobs are normally prestart jobs. The listener job runs in the QSYSWRK subsystem." />
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<meta name="DC.subject" content="Listener program" />
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<meta name="keywords" content="Listener program" />
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<meta name="DC.Relation" scheme="URI" content="rbal1sockcon.htm" />
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<meta name="DC.Relation" scheme="URI" content="../cl/chgddmtcpa.htm" />
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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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<!-- 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>DRDA and
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DDM listener program</title>
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</head>
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<body id="rbal1srvlstn"><a name="rbal1srvlstn"><!-- --></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">DRDA and
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DDM listener program</h1>
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<div><p>The DDM listener program runs in a batch job. There is a one-to-many
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relationship between it and the actual server jobs; there is one listener
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and potentially many DDM server jobs. The server jobs are normally prestart
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jobs. The listener job runs in the QSYSWRK subsystem.</p>
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<div class="section"><p>The DDM listener allows client applications to establish TCP/IP
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connections with an associated server job by handling and routing inbound
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connection requests. After the client has established communications with
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the server job, there is no further association between the client and the
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listener for the duration of that connection.</p>
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</div>
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<div class="section"><p>The DDM listener must be active in order for DRDA<sup>®</sup> Application
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Requesters and DDM source systems to establish connections with the DDM TCP/IP
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server. You can request that the DRDA listener be started automatically
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by either using the Change DDM TCP/IP Attributes (CHGDDMTCPA) command or through <span class="keyword">iSeries™ Navigator</span>. From <span class="keyword">iSeries Navigator</span>,
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navigate to the DDM settings: <span class="menucascade"><span class="uicontrol">Network</span> > <span class="uicontrol">Servers</span> > <span class="uicontrol">TCP/IP</span></span>.
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This will cause the listener to be started when TCP/IP is started. When starting
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the DRDA listener,
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both the QSYSWRK subsystem and TCP/IP must be active.</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="rbal1sockcon.htm" title="There are several concepts that pertain specifically to the TCP/IP communications support used by DRDA and DDM.">TCP/IP communication support concepts for DDM</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="../cl/chgddmtcpa.htm">Change DDM TCP/IP Attributes (CHGDDMTCPA) command</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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