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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 Change Propagation Between Databases</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 005" /> <meta name="date" content="2009-06-04T17:1:1Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="About Change Propagation Between Databases" /> <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_repcont004.htm" title="Previous" type="text/html" /> <link rel="next" href="tdpii_repcont006.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_repcont004.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdpii_repcont006.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BABFIHAI" name="BABFIHAI"></a><a id="TDPII070" name="TDPII070"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>About Change Propagation Between Databases<a id="sthref113" name="sthref113"></a><a id="sthref114" name="sthref114"></a><a id="sthref115" name="sthref115"></a><a id="sthref116" name="sthref116"></a></h1> <a name="BEGIN" id="BEGIN"></a> <p>A <span class="bold">propagation</span> sends messages from one queue to another. You can use Oracle Streams to configure message propagation between two queues in the same database or in different databases. Oracle Streams uses a database link and Oracle Scheduler jobs to send messages. A propagation is always between a <span class="bold">source queue</span> and a <span class="bold">destination queue</span>. In an Oracle Streams replication environment, a propagation typically sends messages that describe database changes (in the form of LCRs) from a source queue in the local database to a destination queue in a remote database.</p> <p><a href="#BABJJDFF">Figure: Propagation</a> shows a propagation.</p> <div class="figure"><a id="BABJJDFF" name="BABJJDFF"></a><a id="TDPII221" name="TDPII221"></a> <p class="titleinfigure">Propagation</p> <img src="img/tdpii008.gif" alt="Description of this figure follows" title="Description of this figure follows" longdesc="img_text/tdpii008.htm" /><br /> <a id="sthref117" name="sthref117" href="img_text/tdpii008.htm">Description of "Propagation"</a><br /> <br /></div> <!-- class="figure" --> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="tdpii_adcont005.htm#CHDEAIGJ">Enabling and Disabling a Propagation</a></p> <p><a href="tdpii_adcont018.htm#CHDJHIIE">Monitoring Propagations</a></p> <p><a href="tdpii_common_ii006.htm#BGBGIACD">Tutorial: Creating a Database Link</a></p> <p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=ADMIN033','newWindow').focus()"><span class="italic">Oracle Database Administrator's Guide</span></a> for information about Oracle Scheduler</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 © 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_repcont004.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdpii_repcont006.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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