2011-09-13 17:44:24 +00:00
|
|
|
|
<?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>Chapter 11. Berkeley DB Transactional Data Store Applications</title>
|
|
|
|
|
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
|
|
|
|
|
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
|
|
|
|
<link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" />
|
|
|
|
|
<link rel="up" href="index.html" title="Berkeley DB Programmer's Reference Guide" />
|
|
|
|
|
<link rel="prev" href="cam_app.html" title="Architecting Data Store and Concurrent Data Store applications" />
|
|
|
|
|
<link rel="next" href="transapp_why.html" title="Why transactions?" />
|
|
|
|
|
</head>
|
|
|
|
|
<body>
|
|
|
|
|
<div xmlns="" class="navheader">
|
|
|
|
|
<div class="libver">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<p>Library Version 11.2.5.3</p>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</div>
|
|
|
|
|
<table width="100%" summary="Navigation header">
|
|
|
|
|
<tr>
|
|
|
|
|
<th colspan="3" align="center">Chapter 11.
|
|
|
|
|
Berkeley DB Transactional Data Store Applications
|
|
|
|
|
</th>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td width="20%" align="left"><a accesskey="p" href="cam_app.html">Prev</a> </td>
|
|
|
|
|
<th width="60%" align="center"> </th>
|
|
|
|
|
<td width="20%" align="right"> <a accesskey="n" href="transapp_why.html">Next</a></td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
<hr />
|
|
|
|
|
</div>
|
|
|
|
|
<div class="chapter" lang="en" xml:lang="en">
|
|
|
|
|
<div class="titlepage">
|
|
|
|
|
<div>
|
|
|
|
|
<div>
|
|
|
|
|
<h2 class="title"><a id="transapp"></a>Chapter 11.
|
|
|
|
|
Berkeley DB Transactional Data Store Applications
|
|
|
|
|
</h2>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
<div class="toc">
|
|
|
|
|
<p>
|
|
|
|
|
<b>Table of Contents</b>
|
|
|
|
|
</p>
|
|
|
|
|
<dl>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp.html#transapp_intro">Transactional Data Store introduction</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_why.html">Why transactions?</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_term.html">Terminology</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_fail.html">Handling failure in Transactional Data Store applications</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_app.html">Architecting Transactional Data Store applications</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_env_open.html">Opening the environment</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_data_open.html">Opening the databases</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_put.html">Recoverability and deadlock handling</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_atomicity.html">Atomicity</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_inc.html">Isolation</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_read.html">Degrees of isolation</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dd>
|
|
|
|
|
<dl>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect2">
|
|
|
|
|
<a href="transapp_read.html#snapshot_isolation">Snapshot Isolation</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
</dl>
|
|
|
|
|
</dd>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_cursor.html">Transactional cursors</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_nested.html">Nested transactions</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_admin.html">Environment infrastructure</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_deadlock.html">Deadlock detection</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_checkpoint.html">Checkpoints</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_archival.html">Database and log file archival</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_logfile.html">Log file removal</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_recovery.html">Recovery procedures</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_hotfail.html">Hot failover</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_journal.html">Using Recovery on Journaling Filesystems</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_filesys.html">Recovery and filesystem operations</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_reclimit.html">Berkeley DB recoverability</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_tune.html">Transaction tuning</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_throughput.html">Transaction throughput</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
<dt>
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
<a href="transapp_faq.html">Transaction FAQ</a>
|
|
|
|
|
</span>
|
|
|
|
|
</dt>
|
|
|
|
|
</dl>
|
|
|
|
|
</div>
|
|
|
|
|
<div class="sect1" lang="en" xml:lang="en">
|
|
|
|
|
<div class="titlepage">
|
|
|
|
|
<div>
|
|
|
|
|
<div>
|
|
|
|
|
<h2 class="title" style="clear: both"><a id="transapp_intro"></a>Transactional Data Store introduction</h2>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
<p>It is difficult to write a useful transactional tutorial and still keep
|
|
|
|
|
within reasonable bounds of documentation; that is, without writing a
|
|
|
|
|
book on transactional programming. We have two goals in this section:
|
|
|
|
|
to familiarize readers with the transactional interfaces of Berkeley DB and
|
|
|
|
|
to provide code building blocks that will be useful for creating
|
|
|
|
|
applications.</p>
|
|
|
|
|
<p>We have not attempted to present this information using a real-world
|
|
|
|
|
application. First, transactional applications are often complex and
|
|
|
|
|
time-consuming to explain. Also, one of our goals is to give you an
|
|
|
|
|
understanding of the wide variety of tools Berkeley DB makes available to you,
|
|
|
|
|
and no single application would use most of the interfaces included in
|
|
|
|
|
the Berkeley DB library. For these reasons, we have chosen to simply present
|
|
|
|
|
the Berkeley DB data structures and programming solutions, using examples that
|
|
|
|
|
differ from page to page. All the examples are included in a standalone
|
|
|
|
|
program you can examine, modify, and run; and from which you will be able
|
|
|
|
|
to extract code blocks for your own applications. Fragments of the
|
|
|
|
|
program will be presented throughout this chapter, and the complete text
|
|
|
|
|
of the <a class="ulink" href="transapp.cs" target="_top">example program</a> for IEEE/ANSI Std 1003.1 (POSIX)
|
|
|
|
|
standard systems is included in the Berkeley DB distribution.</p>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
<div class="navfooter">
|
|
|
|
|
<hr />
|
|
|
|
|
<table width="100%" summary="Navigation footer">
|
|
|
|
|
<tr>
|
|
|
|
|
<td width="40%" align="left"><a accesskey="p" href="cam_app.html">Prev</a> </td>
|
|
|
|
|
<td width="20%" align="center"> </td>
|
|
|
|
|
<td width="40%" align="right"> <a accesskey="n" href="transapp_why.html">Next</a></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td width="40%" align="left" valign="top">Architecting Data Store and Concurrent Data Store applications </td>
|
|
|
|
|
<td width="20%" align="center">
|
|
|
|
|
<a accesskey="h" href="index.html">Home</a>
|
|
|
|
|
</td>
|
|
|
|
|
<td width="40%" align="right" valign="top"> Why transactions?</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|