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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Backup and Restore</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="Server Administration" HREF="admin.html"><LINK REL="PREVIOUS" TITLE="Log File Maintenance" HREF="logfile-maintenance.html"><LINK REL="NEXT" TITLE="SQL Dump" HREF="backup-dump.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="CHAPTER" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="Log File Maintenance" HREF="logfile-maintenance.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="admin.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="SQL Dump" HREF="backup-dump.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="BACKUP" ></A >Chapter 24. Backup and Restore</H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT >24.1. <A HREF="backup-dump.html" ><ACRONYM CLASS="ACRONYM" >SQL</ACRONYM > Dump</A ></DT ><DD ><DL ><DT >24.1.1. <A HREF="backup-dump.html#BACKUP-DUMP-RESTORE" >Restoring the Dump</A ></DT ><DT >24.1.2. <A HREF="backup-dump.html#BACKUP-DUMP-ALL" >Using <SPAN CLASS="APPLICATION" >pg_dumpall</SPAN ></A ></DT ><DT >24.1.3. <A HREF="backup-dump.html#BACKUP-DUMP-LARGE" >Handling Large Databases</A ></DT ></DL ></DD ><DT >24.2. <A HREF="backup-file.html" >File System Level Backup</A ></DT ><DT >24.3. <A HREF="continuous-archiving.html" >Continuous Archiving and Point-in-Time Recovery (PITR)</A ></DT ><DD ><DL ><DT >24.3.1. <A HREF="continuous-archiving.html#BACKUP-ARCHIVING-WAL" >Setting Up WAL Archiving</A ></DT ><DT >24.3.2. <A HREF="continuous-archiving.html#BACKUP-BASE-BACKUP" >Making a Base Backup</A ></DT ><DT >24.3.3. <A HREF="continuous-archiving.html#BACKUP-LOWLEVEL-BASE-BACKUP" >Making a Base Backup Using the Low Level API</A ></DT ><DT >24.3.4. <A HREF="continuous-archiving.html#BACKUP-PITR-RECOVERY" >Recovering Using a Continuous Archive Backup</A ></DT ><DT >24.3.5. <A HREF="continuous-archiving.html#BACKUP-TIMELINES" >Timelines</A ></DT ><DT >24.3.6. <A HREF="continuous-archiving.html#BACKUP-TIPS" >Tips and Examples</A ></DT ><DT >24.3.7. <A HREF="continuous-archiving.html#CONTINUOUS-ARCHIVING-CAVEATS" >Caveats</A ></DT ></DL ></DD ></DL ></DIV ><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 ></P ></P><UL ><LI ><P ><ACRONYM CLASS="ACRONYM" >SQL</ACRONYM > dump</P ></LI ><LI ><P >File system level backup</P ></LI ><LI ><P >Continuous archiving</P ></LI ></UL ><P> Each has its own strengths and weaknesses; each is discussed in turn in the following sections. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="logfile-maintenance.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="backup-dump.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Log File Maintenance</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="admin.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><ACRONYM CLASS="ACRONYM" >SQL</ACRONYM > Dump</TD ></TR ></TABLE ></DIV ></BODY ></HTML >