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182 lines
7.2 KiB
HTML
<?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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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>DbEnv::rep_sync()</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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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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<link rel="prev" href="repstat_print.html" title="DbEnv::rep_stat_print()" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 11.2.5.2</p>
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</div>
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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_sync()</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="repstat_print.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="repmgr_channel.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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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="repsync"></a>DbEnv::rep_sync()</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_sync(u_int32_t flags);</pre>
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<p>
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The <code class="methodname">DbEnv::rep_sync()</code> method forces master synchronization to begin
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for this client. This method is the other half of setting the
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<a class="link" href="repconfig.html#config_DB_REP_CONF_DELAYCLIENT">DB_REP_CONF_DELAYCLIENT</a>
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flag via the <a class="xref" href="repconfig.html" title="DbEnv::rep_set_config()">DbEnv::rep_set_config()</a>
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method.
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</p>
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<p>
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If an application has configured delayed master synchronization, the
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application must synchronize explicitly (otherwise the client will
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remain out-of-date and will ignore all database changes forwarded from
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the replication group master). The <code class="methodname">DbEnv::rep_sync()</code> method may be
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called any time after the client application learns that the new
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master has been established (by receiving a
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<a class="link" href="envevent_notify.html#event_notify_DB_EVENT_REP_NEWMASTER">DB_EVENT_REP_NEWMASTER</a>
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event notification).
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</p>
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<p>
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Before calling this method, the enclosing database environment must
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already have been opened by calling the
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<a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> method and must
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already have been configured to send replication messages by
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calling the <a class="xref" href="reptransport.html" title="DbEnv::rep_set_transport()">DbEnv::rep_set_transport()</a>
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method.
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</p>
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<p>
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The <code class="methodname">DbEnv::rep_sync()</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="id3663562"></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="id3663547"></a>flags</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 <span class="bold"><strong>flags</strong></span> parameter is currently
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unused, and must be set to 0.
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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="id3663438"></a>Errors</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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The <code class="methodname">DbEnv::rep_sync()</code> <span>
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<span>
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method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a>
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exception, encapsulating one of the following non-zero errors, or return one
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of the following non-zero errors:
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</span>
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</span>
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</p>
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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="id3663680"></a>EINVAL</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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If the database environment was not already configured to communicate
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with a replication group by a call to
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<a class="xref" href="reptransport.html" title="DbEnv::rep_set_transport()">DbEnv::rep_set_transport()</a>;
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the database environment was not already opened;
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or if an invalid flag value or parameter was specified.
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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="id3663550"></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="id3663404"></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="repstat_print.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="repmgr_channel.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_stat_print() </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::repmgr_channel()</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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