73 lines
4.9 KiB
HTML
73 lines
4.9 KiB
HTML
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<meta name="DC.Title" content="Troubleshoot the iSeries server connection" />
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<meta name="abstract" content="Each ODBC connection communicates with one database server program that runs on the iSeries server. This program is referred to as the host server program." />
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<title>Troubleshoot the iSeries server connection</title>
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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">Troubleshoot the iSeries server connection</h1>
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<div><p>Each ODBC connection communicates with one database server program
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that runs on the iSeries™ server.
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This program is referred to as the <span class="uicontrol">host server program</span>.</p>
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<p>The name of the Database Server program used with TCP/IP is <span class="uicontrol">QZDASOINIT</span>.
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It is normally located in subsystem QUSRWRK, however it can be set up differently
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by the system administrator.</p>
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<p>Under normal conditions, the program is evoked transparently, and the user
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is not required to take action except to verify that the proper subsystems
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and communication protocols are running. See the Host server administration
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for details on administration of host server jobs.</p>
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<p>The most common indication of a connection failure is an error message
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from the ODBC driver mentioning a communications link failure.</p>
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<p>If ODBC is unable to connect to the iSeries server, perform the following
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troubleshooting tasks:</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="rzaiiodbc26.htm">Checking the server status</a></strong><br />
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Use CWBPING.</li>
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<li class="ulchildlink"><strong><a href="rzaiiodbc28.htm">Verifying that subsystems are active</a></strong><br />
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TCP/IP-connected ODBC jobs (QZDASOINIT) will run in the QUSRWRK subsystem. Verify that this subsystem is running.</li>
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<li class="ulchildlink"><strong><a href="rzaiiodbc29.htm">Verifying that prestart jobs are running</a></strong><br />
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IBM<sup>®</sup> ships
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the QSERVER/QUSRWRK subsystems to use prestart jobs to improve performance
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at job initialization and startup.</li>
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<li class="ulchildlink"><strong><a href="rzaiiodbc30.htm">Additional TCP/IP considerations</a></strong><br />
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Use NETSTAT, STRTCP, and STRHOSTSVR to verify and start TCP/IP functions.</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="rzaiiodbc22.htm" title="Helps you solve a few of the more commonly encountered difficulties with iSeries Access for Windows and ODBC. It also identifies several tools that can help you remove performance bottlenecks. You should review this information before contacting technical support.">Troubleshoot ODBC</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="rzaiihostserver.htm" title="Describes the host servers that are commonly used with iSeries Access for Windows, and describes how to effectively manage and use them.">Host server administration</a></div>
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</div>
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