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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 >The Connection Service File</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="libpq - C Library" HREF="libpq.html"><LINK REL="PREVIOUS" TITLE="The Password File" HREF="libpq-pgpass.html"><LINK REL="NEXT" TITLE="LDAP Lookup of Connection Parameters" HREF="libpq-ldap.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="SECT1" ><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="The Password File" HREF="libpq-pgpass.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="libpq.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 31. <SPAN CLASS="APPLICATION" >libpq</SPAN > - C Library</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="LDAP Lookup of Connection Parameters" HREF="libpq-ldap.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="LIBPQ-PGSERVICE" >31.16. The Connection Service File</A ></H1 ><P > The connection service file allows libpq connection parameters to be associated with a single service name. That service name can then be specified by a libpq connection, and the associated settings will be used. This allows connection parameters to be modified without requiring a recompile of the libpq application. The service name can also be specified using the <TT CLASS="ENVAR" >PGSERVICE</TT > environment variable. </P ><P > The connection service file can be a per-user service file at <TT CLASS="FILENAME" >~/.pg_service.conf</TT > or the location specified by the environment variable <TT CLASS="ENVAR" >PGSERVICEFILE</TT >, or it can be a system-wide file at <TT CLASS="FILENAME" >`pg_config --sysconfdir`/pg_service.conf</TT > or in the directory specified by the environment variable <TT CLASS="ENVAR" >PGSYSCONFDIR</TT >. If service definitions with the same name exist in the user and the system file, the user file takes precedence. </P ><P > The file uses an <SPAN CLASS="QUOTE" >"INI file"</SPAN > format where the section name is the service name and the parameters are connection parameters; see <A HREF="libpq-connect.html" >Section 31.1</A > for a list. For example: </P><PRE CLASS="PROGRAMLISTING" ># comment [mydb] host=somehost port=5433 user=admin</PRE ><P> An example file is provided at <TT CLASS="FILENAME" >share/pg_service.conf.sample</TT >. </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="libpq-pgpass.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="libpq-ldap.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >The Password File</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="libpq.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >LDAP Lookup of Connection Parameters</TD ></TR ></TABLE ></DIV ></BODY ></HTML >