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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <title>About Conflicts and Updatable Materialized Views</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 005" /> <meta name="date" content="2009-06-04T17:1:2Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="About Conflicts and Updatable Materialized Views" /> <meta name="relnum" content="11g Release 2 (11.2)" /> <meta name="partnum" content="E10703-01" /> <link rel="copyright" href="./dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="./dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="prev" href="tdpii_reppit014.htm" title="Previous" type="text/html" /> <link rel="next" href="tdpii_reppit016.htm" title="Next" type="text/html" /> <script src="./callback.js" type="text/javascript"></script> <noscript>Your browser does not support JavaScript. This help page requires JavaScript to render correctly.</noscript> </head> <body> <div class="zz-skip-header"><a href="#BEGIN">Skip Headers</a></div> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="tdpii_reppit014.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdpii_reppit016.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CHDJHGAD" name="CHDJHGAD"></a><a id="TDPII059" name="TDPII059"></a></p> <div class="sect3"><!-- infolevel="all" infotype="General" --> <h1>About Conflicts and Updatable Materialized Views<a id="sthref453" name="sthref453"></a><a id="sthref454" name="sthref454"></a><a id="sthref455" name="sthref455"></a></h1> <a name="BEGIN" id="BEGIN"></a> <p>When you use updatable materialized views, <span class="bold">conflicts</span> are possible. A conflict occurs when a change is made to the same row in the master table and materialized view at nearly the same time. During refresh, the master site detects a conflict when the same row was changed at the master table and its corresponding materialized view since the last refresh.</p> <p>By default, Oracle Database always detects and logs conflicting updates. You can use <span class="bold">conflict resolution</span> to ensure that each conflict is resolved in accordance with your business rules and to ensure that the data converges correctly at all sites. Oracle Database provides built-in conflict resolution methods that you can configure at the master site.</p> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="tdpii_reppit016.htm#BEHBDEHH">Configuring Replication of Read/Write Data Using Materialized Views</a></p> <p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=REPLN005','newWindow').focus()"><span class="italic">Oracle Database Advanced Replication</span></a></p> <p><a href="tdpii_reppit012.htm#BEHCEEHJ">About Replicating Read/Write Data Using Materialized Views</a></p> <p><a href="tdpii_reppit013.htm#BEHIGFCF">About Replication Groups and Updatable Materialized Views</a></p> </div> </div> <!-- class="sect3" --> <!-- class="sect2" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 2007, 2009, Oracle and/or its affiliates. All rights reserved.</span><br /> <a href="./dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td> <td align="center"><a href="tdpii_reppit014.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdpii_reppit016.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </div> <!-- class="footer" --> </body> </html>
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