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<!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 26. Backup and Restore</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="logfile-maintenance.html" title="25.3. Log File Maintenance" /><link rel="next" href="backup-dump.html" title="26.1. SQL Dump" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">Chapter 26. Backup and Restore</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="logfile-maintenance.html" title="25.3. Log File Maintenance">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="admin.html" title="Part III. Server Administration">Up</a></td><th width="60%" align="center">Part III. Server Administration</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="backup-dump.html" title="26.1. SQL Dump">Next</a></td></tr></table><hr /></div><div class="chapter" id="BACKUP"><div class="titlepage"><div><div><h2 class="title">Chapter 26. Backup and Restore</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="sect1"><a href="backup-dump.html">26.1. <acronym class="acronym">SQL</acronym> Dump</a></span></dt><dd><dl><dt><span class="sect2"><a href="backup-dump.html#BACKUP-DUMP-RESTORE">26.1.1. Restoring the Dump</a></span></dt><dt><span class="sect2"><a href="backup-dump.html#BACKUP-DUMP-ALL">26.1.2. Using <span class="application">pg_dumpall</span></a></span></dt><dt><span class="sect2"><a href="backup-dump.html#BACKUP-DUMP-LARGE">26.1.3. Handling Large Databases</a></span></dt></dl></dd><dt><span class="sect1"><a href="backup-file.html">26.2. File System Level Backup</a></span></dt><dt><span class="sect1"><a href="continuous-archiving.html">26.3. Continuous Archiving and Point-in-Time Recovery (PITR)</a></span></dt><dd><dl><dt><span class="sect2"><a href="continuous-archiving.html#BACKUP-ARCHIVING-WAL">26.3.1. Setting Up WAL Archiving</a></span></dt><dt><span class="sect2"><a href="continuous-archiving.html#BACKUP-BASE-BACKUP">26.3.2. Making a Base Backup</a></span></dt><dt><span class="sect2"><a href="continuous-archiving.html#BACKUP-LOWLEVEL-BASE-BACKUP">26.3.3. Making a Base Backup Using the Low Level API</a></span></dt><dt><span class="sect2"><a href="continuous-archiving.html#BACKUP-PITR-RECOVERY">26.3.4. Recovering Using a Continuous Archive Backup</a></span></dt><dt><span class="sect2"><a href="continuous-archiving.html#BACKUP-TIMELINES">26.3.5. Timelines</a></span></dt><dt><span class="sect2"><a href="continuous-archiving.html#BACKUP-TIPS">26.3.6. Tips and Examples</a></span></dt><dt><span class="sect2"><a href="continuous-archiving.html#CONTINUOUS-ARCHIVING-CAVEATS">26.3.7. Caveats</a></span></dt></dl></dd></dl></div><a id="id-1.6.13.2" class="indexterm"></a><p>
As with everything that contains valuable data, <span class="productname">PostgreSQL</span>
databases should be backed up regularly. While the procedure is
essentially simple, it is important to have a clear understanding of
the underlying techniques and assumptions.
</p><p>
There are three fundamentally different approaches to backing up
<span class="productname">PostgreSQL</span> data:
</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><acronym class="acronym">SQL</acronym> dump</p></li><li class="listitem"><p>File system level backup</p></li><li class="listitem"><p>Continuous archiving</p></li></ul></div><p>
Each has its own strengths and weaknesses; each is discussed in turn
in the following sections.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="logfile-maintenance.html" title="25.3. Log File Maintenance">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="admin.html" title="Part III. Server Administration">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="backup-dump.html" title="26.1. SQL Dump">Next</a></td></tr><tr><td width="40%" align="left" valign="top">25.3. Log File Maintenance </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 26.1. <acronym class="acronym">SQL</acronym> Dump</td></tr></table></div></body></html>
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