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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>Hybrid Configurations</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-23T10:13:5Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Hybrid Configurations" /> <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="basic_concepts018.htm" title="Previous" type="text/html" /> <link rel="next" href="basic_concepts020.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="basic_concepts018.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="basic_concepts020.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BABJACIG" name="BABJACIG"></a><a id="ADVRP124" name="ADVRP124"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>Hybrid Configurations</h1> <p>Hybrid configuration is one of the types of replication environments. Hybrid configuration is a combination of different configurations to meet different application requirements.</p> <p>Multimaster replication and materialized views can be combined in <span class="italic">hybrid</span> or "mixed" configurations to meet different application requirements. Hybrid configurations can have any number of master sites and multiple materialized view sites for each master.</p> <p>For example, multimaster (or n-way) replication between two masters can support full-table replication between the databases that support two geographic regions. Materialized views can be defined on the masters to replicate full tables or table subsets to sites within each region.</p> <p>Key differences between materialized views and replicated masters include the following:</p> <ul> <li> <p>Replicated masters must contain data for the full table being replicated, whereas materialized views can replicate subsets of master data.</p> </li> <li> <p>Multimaster replication enables you to replicate changes for each transaction as the changes occur. Materialized view refreshes are set oriented, propagating changes from multiple transactions in a more efficient, batch-oriented operation, but at less frequent intervals.</p> </li> <li> <p>If conflicts occur from changes made to multiple copies of the same data, then detection and resolution of conflicts always occurs at a master, which can either be a master site or a master materialized view site.</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="basic_concepts010.htm#CHDIEEDI">What Is Materialized View Replication?</a></p> <p><a href="basic_concepts015.htm#CHDHIDJJ">Materialized View Refresh</a></p> </div> </div> <!-- class="sect2" --> <!-- class="sect1" --> <!-- 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="basic_concepts018.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="basic_concepts020.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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