57 lines
4.2 KiB
HTML
57 lines
4.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html lang="en-us" xml:lang="en-us">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="security" content="public" />
|
|
<meta name="Robots" content="index,follow" />
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|
<meta name="DC.Type" content="reference" />
|
|
<meta name="DC.Title" content="Distributed unit of work" />
|
|
<meta name="abstract" content="Distributed unit of work (DUW) allows access to multiple application servers within the same unit of work. Each SQL statement can access only one application server. Using distributed unit of work allows changes at multiple applications servers to be committed or rolled back within a single unit of work." />
|
|
<meta name="description" content="Distributed unit of work (DUW) allows access to multiple application servers within the same unit of work. Each SQL statement can access only one application server. Using distributed unit of work allows changes at multiple applications servers to be committed or rolled back within a single unit of work." />
|
|
<meta name="DC.subject" content="distributed relational database, distributed unit of work, distributed unit of work" />
|
|
<meta name="keywords" content="distributed relational database, distributed unit of work, distributed unit of work" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafydrda.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafydrdamanageduk.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafydrdacheck1.htm" />
|
|
<meta name="DC.Relation" scheme="URI" content="rbafydrdacursor.htm" />
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
|
|
<meta name="DC.Format" content="XHTML" />
|
|
<meta name="DC.Identifier" content="rbafyduwex" />
|
|
<meta name="DC.Language" content="en-us" />
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|
<!-- US Government Users Restricted Rights -->
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|
<title>Distributed unit of work</title>
|
|
</head>
|
|
<body id="rbafyduwex"><a name="rbafyduwex"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Distributed unit of work</h1>
|
|
<div><p>Distributed unit of work (DUW) allows access to multiple application
|
|
servers within the same unit of work. Each SQL statement can access only
|
|
one application server. Using distributed unit of work allows changes at
|
|
multiple applications servers to be committed or rolled back within a single
|
|
unit of work.</p>
|
|
</div>
|
|
<div>
|
|
<ul class="ullinks">
|
|
<li class="ulchildlink"><strong><a href="rbafydrdamanageduk.htm">Manage distributed unit of work connections</a></strong><br />
|
|
The CONNECT, SET CONNECTION, DISCONNECT, and RELEASE statements are used to manage connections in the DUW environment.</li>
|
|
<li class="ulchildlink"><strong><a href="rbafydrdacheck1.htm">Check connection status</a></strong><br />
|
|
If running in an environment where it is possible to have read-only connections, the status of the connection should be checked before doing committable updates. This will prevent the unit of work from entering the rollback required state.</li>
|
|
<li class="ulchildlink"><strong><a href="rbafydrdacursor.htm">Cursors and prepared statements</a></strong><br />
|
|
Cursors and prepared statements are scoped to the compilation unit and also to the connection.</li>
|
|
</ul>
|
|
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafydrda.htm" title="A distributed relational database consists of a set of SQL objects that are spread across interconnected computer systems.">Distributed relational database function and SQL</a></div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |