mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-16 17:16:25 +00:00
186 lines
7.5 KiB
HTML
186 lines
7.5 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||
<!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">
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
|
||
<title>DB_ENV->rep_set_nsites()</title>
|
||
<link rel="stylesheet" href="apiReference.css" type="text/css" />
|
||
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
||
<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
|
||
<link rel="up" href="rep.html" title="Chapter 10. Replication Methods" />
|
||
<link rel="prev" href="repset_limit.html" title="DB_ENV->rep_set_limit()" />
|
||
<link rel="next" href="reppriority.html" title="DB_ENV->rep_set_priority()" />
|
||
</head>
|
||
<body>
|
||
<div xmlns="" class="navheader">
|
||
<div class="libver">
|
||
<p>Library Version 11.2.5.3</p>
|
||
</div>
|
||
<table width="100%" summary="Navigation header">
|
||
<tr>
|
||
<th colspan="3" align="center">DB_ENV->rep_set_nsites()</th>
|
||
</tr>
|
||
<tr>
|
||
<td width="20%" align="left"><a accesskey="p" href="repset_limit.html">Prev</a> </td>
|
||
<th width="60%" align="center">Chapter 10.
|
||
Replication Methods
|
||
</th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="reppriority.html">Next</a></td>
|
||
</tr>
|
||
</table>
|
||
<hr />
|
||
</div>
|
||
<div class="sect1" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h2 class="title" style="clear: both"><a id="repnsites"></a>DB_ENV->rep_set_nsites()</h2>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<pre class="programlisting">#include <db.h>
|
||
|
||
int
|
||
DB_ENV->rep_set_nsites(DB_ENV *env, u_int32_t nsites); </pre>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->rep_set_nsites()</code> method specifies the total number of
|
||
sites in a replication group. This method should not be used by
|
||
Replication Manager applications; the number of sites in use by a
|
||
Replication Manager application is determined dynamically.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->rep_set_nsites()</code> method is typically called by
|
||
Base API applications. (However, see also the
|
||
<a class="xref" href="repelect.html" title="DB_ENV->rep_elect()">DB_ENV->rep_elect()</a> method
|
||
<span class="bold"><strong>nsites</strong></span>
|
||
parameter.)
|
||
</p>
|
||
<p>
|
||
The database environment's replication subsystem may also be
|
||
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 of
|
||
the entry in that file is a single line with the string
|
||
"rep_set_nsites", one or more whitespace characters, and the
|
||
number of sites specified. For example, "rep_set_nsites 5" sets
|
||
the number of sites to 5. Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read
|
||
when the database environment is opened, it will silently overrule
|
||
configuration done before that time.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->rep_set_nsites()</code> method configures a database
|
||
environment, not only operations performed using the specified
|
||
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> handle.
|
||
</p>
|
||
<p>
|
||
If master leases are in use, the <code class="methodname">DB_ENV->rep_set_nsites()</code> method
|
||
should not be called after the <a class="xref" href="repstart.html" title="DB_ENV->rep_start()">DB_ENV->rep_start()</a>
|
||
method is called as this could cause you to lose data previously
|
||
thought to be durable. If master leases are not in use, the
|
||
<code class="methodname">DB_ENV->rep_set_nsites()</code> method may be
|
||
called at any time during the life of the application.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->rep_set_nsites()</code> <span>
|
||
<span>
|
||
method returns a non-zero error value on failure and 0 on success.
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp62114184"></a>Parameters</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp62113280"></a>nsites</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
An integer specifying the total number of sites in the replication
|
||
group.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp62115040"></a>Errors</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->rep_set_nsites()</code> <span>
|
||
<span>
|
||
method may fail and return one of the following non-zero errors:
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp62113600"></a>EINVAL</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
If master leases are in use and replication has already been started; or if
|
||
an invalid flag value or parameter was specified.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp62082880"></a>Class</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
|
||
</p>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp62121656"></a>See Also</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="xref" href="rep.html#replist" title="Replication and Related Methods">Replication and Related Methods</a>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr />
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left"><a accesskey="p" href="repset_limit.html">Prev</a> </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="u" href="rep.html">Up</a>
|
||
</td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="reppriority.html">Next</a></td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">DB_ENV->rep_set_limit() </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="h" href="index.html">Home</a>
|
||
</td>
|
||
<td width="40%" align="right" valign="top"> DB_ENV->rep_set_priority()</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|