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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>Opening the Create Master Group Wizard</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="Opening the Create Master Group Wizard" /> <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="multimaster009.htm" title="Previous" type="text/html" /> <link rel="next" href="multimaster011.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="multimaster009.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="multimaster011.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BGBFIIBH" name="BGBFIIBH"></a><a id="ADVRP176" name="ADVRP176"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>Opening the Create Master Group Wizard</h1> <p>Each master site in a replication environment maintains a complete copy of all objects in a replication group. A replication group at a master site is more specifically referred to as a master group. Oracle Enterprise Manager has many features that let you create and manage master groups.</p> <p>Whether you want to build a multimaster or materialized view replication environment, you need to build at least one master site. Before you create your master group, be sure that you have set up your master sites to support replication.</p> <p>See <a href="setting_up001.htm#BABHDIJF">Setting Up Master Sites</a> for details.</p> <p>Also, make sure the schemas whose database objects you want to include in the master group exist at each master site that will participate in the replication activity for the group. If the schemas do not exist at a site, then create them before you complete create the master group.</p> <p>See <a href="multimaster009.htm#BGBHFCGB">Create Schemas at Master Sites</a> for details.</p> <p>By using the Create Master Group Wizard, you can quickly create a master group. Run the Wizard as follows:</p> <ol> <li> <p>In Enterprise Manager, connect to the Database Instance Home page as the replication administrator.</p> </li> <li> <p>Click <span class="bold">Data Movement</span>.</p> </li> <li> <p>Under the Advanced Replication section, click <span class="bold">Setup</span>. The Advanced Replication: Setup page appears.</p> </li> <li> <p>Expand <span class="bold">Multi-master Replication</span>, and select <img src="shortcut.png" alt="callback" border="0" /><a href="javascript:void(0);" onclick="redirectEMpage('MASTER_GROUP_CREATE');"><span class="bold">Create Master Group</span></a>.</p> </li> <li> <p>Click <span class="bold">Continue</span> to start the Create Master Group Wizard.</p> </li> </ol> <p>Complete the pages in the wizard. For more information about using the wizard, click <span class="bold">Help</span> for each page of the wizard.</p> <p>During the creation of the master group, the Wizard may prompt you for additional information. For example, when you create a new master group along with a replicated table that does not have a primary key, Oracle Enterprise Manager displays the Set Alternate Key Columns dialog box so that you can identify an alternate identity column or set of columns for the replicated table. The Wizard also asks you whether you want to enable replication activity for the new master group after creation.</p> <div class="helpinfonote"> <p><span class="bold">Caution: </span>If you add one or more tables to a master group during creation of the group, do not resume replication activity immediately. First, consider the possibility of replication conflicts, and configure conflict resolution for the replicated tables in the group. <p>See <a href="configure001.htm#CACJABIJ">About Conflict Resolution Methods</a> for more information about configuring conflict resolution for master group objects.</p> </p> </div> <div class="helpinfonote"> <p><span class="bold">Note: </span>Read-only materialized views do not require a master site, but if you want to support a materialized view group with updatable materialized views, you need at least one master group at a single master site.</p> </div> <div class="helpinfonote"> <p><span class="bold">API Equivalents: </span><code>DBMS_REPCAT.CREATE_MASTER_REPGROUP</code>, <code>DBMS_REPCAT.SET_COLUMNS</code></p> </div> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="multimaster008.htm#BGBEGACJ">Flowchart for Creating a Master Group</a></p> <p><a href="basic_concepts007.htm#BABIFJCG">What Is Multimaster Replication?</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. 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