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  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2011-05-11 10:41:53 UTC
  • Revision ID: james.westby@ubuntu.com-20110511104153-psbh2o58553fv1m0
Tags: upstream-9.1~beta1
Import upstream version 9.1~beta1

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doc/src/sgml/html/manage-ag-config.html
 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 
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<HTML
 
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><HEAD
 
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><TITLE
 
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>Database Configuration</TITLE
 
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><META
 
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NAME="GENERATOR"
 
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
 
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REV="MADE"
 
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HREF="mailto:pgsql-docs@postgresql.org"><LINK
 
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REL="HOME"
 
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TITLE="PostgreSQL 9.1beta1 Documentation"
 
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HREF="index.html"><LINK
 
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REL="UP"
 
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TITLE="Managing Databases"
 
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HREF="managing-databases.html"><LINK
 
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REL="PREVIOUS"
 
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TITLE="Template Databases"
 
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HREF="manage-ag-templatedbs.html"><LINK
 
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REL="NEXT"
 
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TITLE="Destroying a Database"
 
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HREF="manage-ag-dropdb.html"><LINK
 
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REL="STYLESHEET"
 
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TYPE="text/css"
 
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HREF="stylesheet.css"><META
 
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HTTP-EQUIV="Content-Type"
 
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CONTENT="text/html; charset=ISO-8859-1"><META
 
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NAME="creation"
 
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CONTENT="2011-04-27T21:20:33"></HEAD
 
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><BODY
 
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CLASS="SECT1"
 
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><DIV
 
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CLASS="NAVHEADER"
 
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><TABLE
 
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SUMMARY="Header navigation table"
 
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WIDTH="100%"
 
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BORDER="0"
 
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CELLPADDING="0"
 
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CELLSPACING="0"
 
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><TR
 
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><TH
 
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COLSPAN="5"
 
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ALIGN="center"
 
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VALIGN="bottom"
 
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><A
 
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HREF="index.html"
 
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>PostgreSQL 9.1beta1 Documentation</A
 
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></TH
 
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></TR
 
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><TR
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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TITLE="Template Databases"
 
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HREF="manage-ag-templatedbs.html"
 
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ACCESSKEY="P"
 
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>Prev</A
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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TITLE="Managing Databases"
 
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HREF="managing-databases.html"
 
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>Fast Backward</A
 
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></TD
 
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><TD
 
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WIDTH="60%"
 
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ALIGN="center"
 
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VALIGN="bottom"
 
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>Chapter 21. Managing Databases</TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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TITLE="Managing Databases"
 
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HREF="managing-databases.html"
 
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>Fast Forward</A
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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TITLE="Destroying a Database"
 
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HREF="manage-ag-dropdb.html"
 
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ACCESSKEY="N"
 
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>Next</A
 
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></TD
 
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></TR
 
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></TABLE
 
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><HR
 
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ALIGN="LEFT"
 
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WIDTH="100%"></DIV
 
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><DIV
 
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CLASS="SECT1"
 
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><H1
 
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CLASS="SECT1"
 
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><A
 
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NAME="MANAGE-AG-CONFIG"
 
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>21.4. Database Configuration</A
 
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></H1
 
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><P
 
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>   Recall from <A
 
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HREF="runtime-config.html"
 
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>Chapter 18</A
 
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> that the
 
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   <SPAN
 
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CLASS="PRODUCTNAME"
 
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>PostgreSQL</SPAN
 
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> server provides a large number of
 
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   run-time configuration variables.  You can set database-specific
 
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   default values for many of these settings.
 
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  </P
 
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><P
 
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>   For example, if for some reason you want to disable the
 
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   <ACRONYM
 
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CLASS="ACRONYM"
 
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>GEQO</ACRONYM
 
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> optimizer for a given database, you'd
 
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   ordinarily have to either disable it for all databases or make sure
 
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   that every connecting client is careful to issue <TT
 
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CLASS="LITERAL"
 
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>SET geqo
 
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   TO off</TT
 
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>.  To make this setting the default within a particular
 
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   database, you can execute the command:
 
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</P><PRE
 
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CLASS="PROGRAMLISTING"
 
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>ALTER DATABASE mydb SET geqo TO off;</PRE
 
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><P>
 
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   This will save the setting (but not set it immediately).  In
 
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   subsequent connections to this database it will appear as though
 
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   <TT
 
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CLASS="LITERAL"
 
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>SET geqo TO off;</TT
 
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> had been executed just before the
 
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   session started.
 
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   Note that users can still alter this setting during their sessions; it
 
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   will only be the default.  To undo any such setting, use
 
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   <TT
 
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CLASS="LITERAL"
 
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>ALTER DATABASE <TT
 
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CLASS="REPLACEABLE"
 
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><I
 
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>dbname</I
 
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></TT
 
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> RESET
 
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   <TT
 
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CLASS="REPLACEABLE"
 
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><I
 
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>varname</I
 
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></TT
 
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></TT
 
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>.
 
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  </P
 
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></DIV
 
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><DIV
 
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CLASS="NAVFOOTER"
 
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><HR
 
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ALIGN="LEFT"
 
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WIDTH="100%"><TABLE
 
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SUMMARY="Footer navigation table"
 
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WIDTH="100%"
 
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BORDER="0"
 
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CELLPADDING="0"
 
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CELLSPACING="0"
 
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><TR
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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HREF="manage-ag-templatedbs.html"
 
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ACCESSKEY="P"
 
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>Prev</A
 
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></TD
 
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><TD
 
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WIDTH="34%"
 
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ALIGN="center"
 
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VALIGN="top"
 
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><A
 
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HREF="index.html"
 
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ACCESSKEY="H"
 
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>Home</A
 
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></TD
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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HREF="manage-ag-dropdb.html"
 
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ACCESSKEY="N"
 
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>Next</A
 
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></TD
 
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></TR
 
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><TR
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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>Template Databases</TD
 
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><TD
 
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WIDTH="34%"
 
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ALIGN="center"
 
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VALIGN="top"
 
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><A
 
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HREF="managing-databases.html"
 
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ACCESSKEY="U"
 
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>Up</A
 
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></TD
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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>Destroying a Database</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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>
 
 
b'\\ No newline at end of file'