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77 lines
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HTML
77 lines
4 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>application-specific recovery</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_0_toc.html" title="Chapter 10. Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0" />
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<link rel="prev" href="upgrade_4_0_cxx.html" title="C++ ostream objects" />
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<link rel="next" href="upgrade_4_0_disk.html" title="Upgrade Requirements" />
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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">application-specific recovery</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_0_cxx.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 10. Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0</th>
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<td width="20%" align="right"> <a accesskey="n" href="upgrade_4_0_disk.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_0_asr"></a>application-specific recovery</h2>
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</div>
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</div>
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</div>
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<p>If you have created your own logging and recovery routines, you may need
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to upgrade them to the Berkeley DB 4.0 release.</p>
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<p>First, you should regenerate your logging, print, read and the other
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automatically generated routines, using the dist/gen_rec.awk tool
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included in the Berkeley DB distribution.</p>
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<p>Next, compare the template file code generated by the gen_rec.awk tool
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against the code generated by the last release in which you built a
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template file. Any changes in the templates should be incorporated into
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the recovery routines you have written.</p>
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<p>Third, if your recovery functions refer to <a href="../api_reference/C/envset_app_dispatch.html#set_app_dispatch_DB_TXN_FORWARD_ROLL" class="olink">DB_TXN_FORWARD_ROLL</a>
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(that is, your code checks for that particular operation code), you
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should replace it with DB_REDO(op) which compares the operation code to
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both <a href="../api_reference/C/envset_app_dispatch.html#set_app_dispatch_DB_TXN_FORWARD_ROLL" class="olink">DB_TXN_FORWARD_ROLL</a> and <a href="../api_reference/C/envset_app_dispatch.html#set_app_dispatch_DB_TXN_APPLY" class="olink">DB_TXN_APPLY</a>.
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(<a href="../api_reference/C/envset_app_dispatch.html#set_app_dispatch_DB_TXN_APPLY" class="olink">DB_TXN_APPLY</a> is a potential value for the operation code as of
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the 4.0 release.)</p>
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<p>Finally, if you have created your own logging and recovery routines, we
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recommend you contact us and ask us to review those routines for you.</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_0_cxx.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_4_0_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="upgrade_4_0_disk.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">C++ ostream objects </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"> Upgrade Requirements</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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