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140 lines
5 KiB
HTML
140 lines
5 KiB
HTML
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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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<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>db_copy</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="db.html" title="Chapter 2. The DB Handle" />
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<link rel="prev" href="dbcompact.html" title="DB->compact()" />
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<link rel="next" href="dbcreate.html" title="db_create" />
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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">db_copy</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="dbcompact.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 2.
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The DB Handle
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="dbcreate.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="db_copy"></a>db_copy</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.h>
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int
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db_copy(DB_ENV *dbenv, const char *dbfile, const char *target,
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const char *password); </pre>
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<p>
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The <code class="function">db_copy()</code> routine copies the named
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database file to the target directory. An optional password can be
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specified for encrypted database files. This routine can be used
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on operating systems that do not support atomic file system reads
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to create a hot backup of a database file. If the specified
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database file is for a QUEUE database with extents, all extent
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files for that database will be copied as well.
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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="id3854401"></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="id3854405"></a>dbenv</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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An open environment handle for the environment containing
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the database file.
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</p>
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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="id3854581"></a>dbfile</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 path name to the file to be backed up. The file name
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is resolved using the usual BDB library name resolution
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rules.
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</p>
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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="id3854589"></a>target</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 directory to which you want the database copied. This
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is specified relative to the current directory of the
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executing process or as an absolute path.
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</p>
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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="id3854598"></a>password</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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Specified only if the database file is encrypted. The resulting
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backup file will be encrypted as well.
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</p>
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</div>
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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="dbcompact.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="db.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="dbcreate.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">DB->compact() </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"> db_create</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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