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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>Timestamp</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-23T10:13:6Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Timestamp" /> <meta name="relnum" content="11g Release 1 (11.1)" /> <meta name="partnum" content="A12345-01" /> <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="configure001.htm" title="Previous" type="text/html" /> <link rel="next" href="configure003.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> <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="configure001.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="configure003.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CACBEFGB" name="CACBEFGB"></a><a id="ADVRP289" name="ADVRP289"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>Timestamp</h1> <p>The earliest timestamp and latest timestamp methods are variations on the minimum and maximum value methods. To use the timestamp method, you must designate a column in the replicated table of type <code>DATE</code>. When an application updates any column in a column group, a trigger also updates the value of the designated timestamp column with the local <code>SYSDATE</code>.</p> <p>When you use the earliest timestamp conflict resolution method, the oldest changes are always applied. When you user the latest timestamp conflict resolution method, the most recent changes are always applied.</p> <p>There are several elements needed to make timestamp conflict resolution work well:</p> <ul> <li> <p>Synchronized time settings between computers.</p> </li> <li> <p>Timestamp field and a trigger to automatically record timestamp.</p> </li> </ul> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="getting_started002.htm#CHDFHHJC">Flowchart for Creating a Replication Environment</a></p> <p><a href="multimaster008.htm#BGBEGACJ">Flowchart for Creating a Master Group</a></p> <p><a href="configure008.htm#CACIECGJ">Before Configuring Conflict Resolution</a></p> </div> </div> <!-- 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 © 2005, 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="configure001.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="configure003.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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