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154 lines
6.3 KiB
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>DbEnv::rep_set_priority()</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB C++ API Reference" />
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<link rel="up" href="rep.html" title="Chapter 11. Replication Methods" />
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<p>Library Version 11.2.5.2</p>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">DbEnv::rep_set_priority()</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="repnsites.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 11.
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Replication Methods
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="repset_request.html">Next</a></td>
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</tr>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="reppriority"></a>DbEnv::rep_set_priority()</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">#include <db_cxx.h>
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int
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DbEnv::rep_set_priority(u_int32_t priority); </pre>
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<p>
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The <code class="methodname">DbEnv::rep_set_priority()</code> method specifies the database
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environment's priority in replication group elections. A special
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value of 0 indicates that this environment cannot be a replication
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group master.
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</p>
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<p>
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The database environment's replication subsystem may also be
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configured using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The syntax
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of the entry in that file is a single line with the string
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"rep_set_priority", one or more whitespace characters, and the
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priority of this site. For example, "rep_set_priority 1" sets the
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priority of this site to 1. Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read
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when the database environment is opened, it will silently overrule
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configuration done before that time.
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</p>
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<p>
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Note that if the application never explicitly sets a priority, then a default value of 100
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is used.
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</p>
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<p>
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The <code class="methodname">DbEnv::rep_set_priority()</code> method configures a database
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environment, not only operations performed using the specified
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<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a> handle.
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</p>
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<p>
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The <code class="methodname">DbEnv::rep_set_priority()</code> method may be called at any time
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during the life of the application.
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</p>
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<p>
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The <code class="methodname">DbEnv::rep_set_priority()</code> <span>
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<span>
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method either returns a non-zero error value or throws an
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exception that encapsulates a non-zero error value on
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failure, and returns 0 on success.
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</span>
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</span>
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</p>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3660454"></a>Parameters</h3>
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</div>
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</div>
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</div>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="id3660443"></a>priority</h4>
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</div>
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</div>
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</div>
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<p>
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The priority of this database environment in the replication group. The
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priority must be a non-zero integer, or 0 if this environment cannot be a
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replication group master. (See
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<a href="../../programmer_reference/rep_pri.html" class="olink">Replication environment priorities</a>
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for more information).
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</p>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3659878"></a>Class</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
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</p>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3660458"></a>See Also</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="xref" href="rep.html#replist" title="Replication and Related Methods">Replication and Related Methods</a>
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</p>
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</div>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="repnsites.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="rep.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="repset_request.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">DbEnv::rep_set_nsites() </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> DbEnv::rep_set_request()</td>
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</tr>
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</table>
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</body>
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</html>
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