53 lines
3.7 KiB
HTML
53 lines
3.7 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="concept" />
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<meta name="DC.Title" content="Considerations for XA transactions" />
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<meta name="abstract" content="In the XA environment, each database is considered a separate resource manager. When a transaction manager wants to access two databases under the same transaction, it must use the XA protocols to perform two-phase commit with the two resource managers." />
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<meta name="description" content="In the XA environment, each database is considered a separate resource manager. When a transaction manager wants to access two databases under the same transaction, it must use the XA protocols to perform two-phase commit with the two resource managers." />
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<meta name="DC.Relation" scheme="URI" content="rzakjiasp.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzakjxatransaction.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzaly/rzalyoverview.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2004, 2006" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Considerations for XA transactions</title>
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</head>
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<body id="rzakjconsidxa"><a name="rzakjconsidxa"><!-- --></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">Considerations for XA transactions</h1>
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<div><p>In the XA environment, each database is considered a separate resource
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manager. When a transaction manager wants to access two databases under the
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same transaction, it must use the XA protocols to perform two-phase commit
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with the two resource managers.</p>
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<p>Because each independent disk pool is a separate SQL database, in the XA
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environment each independent disk pool is also considered a separate resource
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manager. For an application server to perform a transaction which targets
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two different independent disk pools, the transaction manager must also use
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a two-phase commit protocol.</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="rzakjiasp.htm" title="Independent disk pools and independent disk pool groups, can each have a separate i5/OS SQL database. You can use commitment control with these databases.">Commitment control and independent disk pools</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="rzakjxatransaction.htm" title="DB2 Universal Database (UDB) for iSeries can participate in X/Open global transactions.">XA transaction support for commitment control</a></div>
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<div><a href="../rzaly/rzalyoverview.htm">Independent disk pools</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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