1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>Release 3.0: Upgrade Requirements</title> 7 <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> 8 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> 9 <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> 10 <link rel="up" href="upgrade_3_0_toc.html" title="Chapter��33.��Upgrading Berkeley DB 2.X applications to Berkeley DB 3.0" /> 11 <link rel="prev" href="upgrade_3_0_java.html" title="Release 3.0: additional Java changes" /> 12 <link rel="next" href="upgrade_3_1_toc.html" title="Chapter��34.��Upgrading Berkeley DB 3.0 applications to Berkeley DB 3.1" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">Release 3.0: Upgrade Requirements</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="upgrade_3_0_java.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��33.��Upgrading Berkeley DB 2.X applications to Berkeley DB 3.0</th> 23 <td width="20%" align="right">��<a accesskey="n" href="upgrade_3_1_toc.html">Next</a></td> 24 </tr> 25 </table> 26 <hr /> 27 </div> 28 <div class="sect1" lang="en" xml:lang="en"> 29 <div class="titlepage"> 30 <div> 31 <div> 32 <h2 class="title" style="clear: both"><a id="upgrade_3_0_disk"></a>Release 3.0: Upgrade Requirements</h2> 33 </div> 34 </div> 35 </div> 36 <p>Log file formats and the Btree, Recno and Hash Access Method database 37formats changed in the Berkeley DB 3.0 release. (The on-disk Btree/Recno 38format changed from version 6 to version 7. The on-disk Hash format 39changed from version 5 to version 6.) Until the underlying databases 40are upgraded, the <a href="../api_reference/C/dbopen.html" class="olink">DB->open()</a> method will return a <code class="literal">DB_OLD_VERSION</code> 41error.</p> 42 <p>For further information on upgrading Berkeley DB installations, see 43<a class="xref" href="upgrade_process.html" title="Upgrading Berkeley DB installations">Upgrading Berkeley DB installations</a>.</p> 44 </div> 45 <div class="navfooter"> 46 <hr /> 47 <table width="100%" summary="Navigation footer"> 48 <tr> 49 <td width="40%" align="left"><a accesskey="p" href="upgrade_3_0_java.html">Prev</a>��</td> 50 <td width="20%" align="center"> 51 <a accesskey="u" href="upgrade_3_0_toc.html">Up</a> 52 </td> 53 <td width="40%" align="right">��<a accesskey="n" href="upgrade_3_1_toc.html">Next</a></td> 54 </tr> 55 <tr> 56 <td width="40%" align="left" valign="top">Release 3.0: additional Java changes��</td> 57 <td width="20%" align="center"> 58 <a accesskey="h" href="index.html">Home</a> 59 </td> 60 <td width="40%" align="right" valign="top">��Chapter��34.��Upgrading Berkeley DB 3.0 applications to Berkeley DB 3.1</td> 61 </tr> 62 </table> 63 </div> 64 </body> 65</html> 66