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Gregory Burd 3c9dfcc449 Release 5.3.21 5/11/2012
2012-11-14 16:35:20 -05:00

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<title>Getting Started with Berkeley DB Transaction Processing</title>
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<div>
<h1 class="title"><a id="idm243608"></a>Getting Started with Berkeley DB Transaction Processing</h1>
</div>
<div>
<div class="legalnotice">
<a id="idp43984"></a>
<p class="legalnotice-title">
<b>Legal Notice</b>
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<p>
This documentation is distributed under an open source license.
You may review the terms of this license at:
<a class="ulink" href="http://www.oracle.com/technetwork/database/berkeleydb/downloads/oslicense-093458.html" target="_top">http://www.oracle.com/technetwork/database/berkeleydb/downloads/oslicense-093458.html</a>
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Oracle, Berkeley DB,
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<p class="pubdate">5/11/2012</p>
</div>
</div>
<hr />
</div>
<div class="toc">
<p>
<b>Table of Contents</b>
</p>
<dl>
<dt>
<span class="preface">
<a href="preface.html">Preface</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="preface.html#conventions">Conventions Used in this Book</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="moreinfo.html">For More Information</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="moreinfo.html#contact_us">Contact Us</a>
</span>
</dt>
</dl>
</dd>
</dl>
</dd>
<dt>
<span class="chapter">
<a href="introduction.html">1. Introduction</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="introduction.html#txnintro">Transaction Benefits</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="sysfailure.html">A Note on System Failure</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="apireq.html">Application Requirements</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="multithread-intro.html">Multi-threaded
<span>and Multi-process</span>
Applications</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="recovery-intro.html">Recoverability</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="perftune-intro.html">Performance Tuning</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="chapter">
<a href="enabletxn.html">2. Enabling Transactions</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="enabletxn.html#environments">Environments</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="enabletxn.html#filenaming">File Naming</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="enabletxn.html#errorsupport">Error Support</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="enabletxn.html#sharedmemory">Shared Memory Regions</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="enabletxn.html#security">Security Considerations</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="envopen.html">Opening a Transactional Environment and
<span>Database</span>
</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="chapter">
<a href="usingtxns.html">3. Transaction Basics</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="usingtxns.html#commitresults">Committing a Transaction</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="nodurabletxn.html">Non-Durable Transactions</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="abortresults.html">Aborting a Transaction</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="autocommit.html">Auto Commit</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="nestedtxn.html">Nested Transactions</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="txncursor.html">Transactional Cursors</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="txnindices.html">Secondary Indices with Transaction Applications</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="maxtxns.html">Configuring the Transaction Subsystem</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="chapter">
<a href="txnconcurrency.html">4. Concurrency</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="txnconcurrency.html#concurrenthandles">Which DB Handles are Free-Threaded</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="blocking_deadlocks.html">Locks, Blocks, and Deadlocks</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="blocking_deadlocks.html#locks">Locks</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="blocking_deadlocks.html#blocks">Blocks</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="blocking_deadlocks.html#deadlocks">Deadlocks</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="lockingsubsystem.html">The Locking Subsystem</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="lockingsubsystem.html#configuringlock">Configuring the Locking Subsystem</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="lockingsubsystem.html#configdeadlkdetect">Configuring Deadlock Detection</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="lockingsubsystem.html#deadlockresolve">Resolving Deadlocks</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="lockingsubsystem.html#setpriority">Setting Transaction Priorities</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="isolation.html">Isolation</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="isolation.html#degreesofisolation">Supported Degrees of Isolation</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="isolation.html#dirtyreads">Reading Uncommitted Data</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="isolation.html#readcommitted">Committed Reads</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="isolation.html#snapshot_isolation">Using Snapshot Isolation</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="txn_ccursor.html">Transactional Cursors and Concurrent Applications</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="txn_ccursor.html#cursordirtyreads">Using Cursors with Uncommitted Data</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="exclusivelock.html">Exclusive Database Handles</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="readmodifywrite.html">Read/Modify/Write</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="txnnowait.html">No Wait on Blocks</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="reversesplit.html">Reverse BTree Splits</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="chapter">
<a href="filemanagement.html">5. Managing DB Files</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="filemanagement.html#checkpoints">Checkpoints</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="backuprestore.html">Backup Procedures</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="backuprestore.html#copyutilities">About Unix Copy Utilities</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="backuprestore.html#standardbackup">Offline Backups</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="backuprestore.html#hotbackup">Hot Backup</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="backuprestore.html#incrementalbackups">Incremental Backups</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="recovery.html">Recovery Procedures</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="recovery.html#normalrecovery">Normal Recovery</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="recovery.html#catastrophicrecovery">Catastrophic Recovery</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="architectrecovery.html">Designing Your Application for Recovery</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="architectrecovery.html#multithreadrecovery">Recovery for Multi-Threaded Applications</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="architectrecovery.html#multiprocessrecovery">Recovery in Multi-Process Applications</a>
</span>
</dt>
</dl>
</dd>
<dt>
<span class="sect1">
<a href="hotfailover.html">Using Hot Failovers</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="logfileremoval.html">Removing Log Files</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="logconfig.html">Configuring the Logging Subsystem</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect2">
<a href="logconfig.html#logfilesize">Setting the Log File Size</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="logconfig.html#logregionsize">Configuring the Logging Region Size</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="logconfig.html#inmemorylogging">Configuring In-Memory Logging</a>
</span>
</dt>
<dt>
<span class="sect2">
<a href="logconfig.html#logbuffer">Setting the In-Memory Log Buffer Size</a>
</span>
</dt>
</dl>
</dd>
</dl>
</dd>
<dt>
<span class="chapter">
<a href="wrapup.html">6. Summary and Examples</a>
</span>
</dt>
<dd>
<dl>
<dt>
<span class="sect1">
<a href="wrapup.html#anatomy">Anatomy of a Transactional Application</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="txnexample_c.html">Transaction Example</a>
</span>
</dt>
<dt>
<span class="sect1">
<a href="inmem_txnexample_c.html">In-Memory Transaction Example</a>
</span>
</dt>
</dl>
</dd>
</dl>
</div>
</div>
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<td width="40%" align="left"> </td>
<td width="20%" align="center"> </td>
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</tr>
<tr>
<td width="40%" align="left" valign="top"> </td>
<td width="20%" align="center"> </td>
<td width="40%" align="right" valign="top"> Preface</td>
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