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71 lines
3.3 KiB
HTML
71 lines
3.3 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>Upgrade Requirements</title>
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<link rel="stylesheet" href="gettingStarted.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 Upgrade Guide" />
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<link rel="up" href="upgrade_4_6_toc.html" title="Chapter 4. Upgrading Berkeley DB 4.5 applications to Berkeley DB 4.6" />
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<link rel="prev" href="upgrade_4_6_win.html" title="Windows 9X" />
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<link rel="next" href="changelog_4_6.html" title="Berkeley DB 4.6.21 Change Log" />
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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 11.2.5.3</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">Upgrade Requirements</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="upgrade_4_6_win.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 4. Upgrading Berkeley DB 4.5 applications to Berkeley DB 4.6</th>
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<td width="20%" align="right"> <a accesskey="n" href="changelog_4_6.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="upgrade_4_6_disk"></a>Upgrade Requirements</h2>
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</div>
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</div>
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</div>
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<p>The log file format changed in the Berkeley DB 4.6 release.</p>
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<p>The format of Hash database pages was changed in the Berkeley DB 4.6 release,
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and items are now stored in sorted order. <span class="bold"><strong>The format changes
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are entirely backward-compatible, and no database upgrades are needed.</strong></span>
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However, upgrading existing databases can offer significant performance
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improvements. Note that databases created using the 4.6 release may not
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be usable with earlier Berkeley DB releases.</p>
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<p>For further information on upgrading Berkeley DB installations, see
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<a class="xref" href="upgrade_process.html" title="Chapter 2. Upgrading from previous versions of Berkeley DB">
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Upgrading from previous versions of Berkeley DB
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</a>.</p>
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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="upgrade_4_6_win.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_4_6_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="changelog_4_6.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">Windows 9X </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"> Berkeley DB 4.6.21 Change Log</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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