104 lines
6.1 KiB
HTML
104 lines
6.1 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="task" />
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<meta name="DC.Title" content="Use Distributed transaction support" />
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<meta name="abstract" content="The iSeries Access for Windows client supports Microsoft Transaction Server (MTS) and the Component Services model, with the iSeries Access ODBC driver and the IBMDASQL OLE DB provider." />
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<meta name="description" content="The iSeries Access for Windows client supports Microsoft Transaction Server (MTS) and the Component Services model, with the iSeries Access ODBC driver and the IBMDASQL OLE DB provider." />
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<meta name="DC.Relation" scheme="URI" content="http://www.microsoft.com/com/tech/MTS.asp" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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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>Use Distributed transaction support</title>
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</head>
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<body id="rzaiimts"><a name="rzaiimts"><!-- --></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">Use Distributed transaction support</h1>
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<div><p>The iSeries™ Access
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for Windows<sup>®</sup> client
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supports Microsoft<sup>®</sup> Transaction Server (MTS) and the Component
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Services model, with the iSeries Access ODBC driver and the IBMDASQL OLE DB
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provider.</p>
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<div class="section"><p><strong>MTS</strong></p>
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<p>MTS is a Microsoft component-based programming
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model and run-time environment for developing, deploying, and managing Internet
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server applications. In many three-tier environments, Active Server Pages
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(ASP) call MTS components to access databases, mainframe applications, and
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message queues. Used with iSeries Access for Windows running in the middle-tier of
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a three-tier environment, MTS components manage transactions between client
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applications, iSeries Access
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for Windows components,
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and the databases involved in the transactions.</p>
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<p>MTS uses Microsoft Distributed
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Transaction Coordinator (MSDTC) in order to manage transactions that span
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multiple Database Management Systems (DBMS), and to ensure two-phase commit
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integrity when dealing with transactions whose implementations depend on mutual
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success.</p>
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<p>In newer Windows server models, MTS has been
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replaced with the Component Services model. The iSeries Access for Windows ODBC
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and OLE DB providers support the Component Services model in the same manner
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as they support MTS.</p>
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<p><strong>Implementation notes</strong></p>
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<ul><li>If the MSDTC cannot load the iSeries Access ODBC driver, the SQLSetConnectAttr(
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SQL_ATTR_ENLIST_IN_DTC ) will fail with reason code of 2 (XaRmCreate failed).
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If you installed iSeries Access
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for Windows PC5250
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eumlator component, the MSDTC system environment path is set for you. To avoid
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this, the system environment path on the PC running MSDTC must include the
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path to the Shared directory within the directory in which iSeries Access
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for Windows is
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installed. For example: C:\Program Files\IBM\Client Access\Shared.</li>
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<li>If you are using SSL, or any other configurable value on the <span class="menucascade"><span class="uicontrol">Connections</span> > <span class="uicontrol">Properties</span></span> dialog
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in iSeries Navigator,
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your iSeries connection
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name in iSeries Navigator
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must match the connection name specified on the client PC managed by MTS.
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MSDTC uses the same connection names as iSeries Access for Windows ODBC
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client PCs managed by MTS to connect to the DB2<sup>®</sup> UDB for iSeries database. To change the connection
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properties of the MSDTC connections, you must change the system account registry. <p>One
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way to do this is to use Incoming Remote Command (IRC) in combination with
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the CWBENV utility:</p>
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</li>
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</ul>
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</div>
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<ol><li class="stepexpand"><span>Run CWBENV on a client PC to extract the configuration information
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for an environment.</span></li>
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<li class="stepexpand"><span>Copy the resulting file to the MSDTC PC.</span></li>
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<li class="stepexpand"><span>Start the iSeries Access for Windows Remote Command service and ensure
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that it is configured to run in the Local System context.</span></li>
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<li class="stepexpand"><span>Using the RUNRMTCMD command from a PC5250 session, send a CWBENV
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command to the MSDTC PC to import the environment.</span> <p>See the User's
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Guide in the iSeries Access
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for Windows program
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group for more information on these functions.</p>
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</li>
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</ol>
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<div class="section"><p>For more information about MTS or the Component Services model,
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refer to the Microsoft Web site.</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="rzaiithreetier.htm" title="By installing iSeries Access for Windows on the middle tier of a three-tier environment, a wide variety of client workstations can access iSeries services.">Use iSeries Access for Windows in a three-tier environment</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="http://www.microsoft.com/com/tech/MTS.asp" target="_blank">Microsoft MTS Web site</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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