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<HTML>
<HEAD>
<TITLE>CREATEDB(UNIX) manual page</TITLE>
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<BODY>
<A HREF="pgsql.html">PostgreSQL Contents</A>
<H2><A NAME="sect0" HREF="#toc0">NAME </A></H2>
createdb - create a database
<H2><A NAME="sect1" HREF="#toc1">SYNOPSIS </A></H2>
<B>createdb</B> [<B>-a</B> system] [<B>-h</B> host]
[<B>-p</B> port] [<B>-u</B>] [<B>-D</B> location] [dbname]
<H2><A NAME="sect2" HREF="#toc2">DESCRIPTION </A></H2>
<B>createdb</B> creates a new
database. The person who executes this command becomes the database administrator,
or DBA, for this database and is the only person, other than the Postgres
super-user, who can destroy it. <P>
<I>Createdb</I> is a shell script that invokes
<I>psql</I>. Hence, a <I>postmaster</I> process must be running on the database server
host before <I>createdb</I> is executed. In addition, the <FONT SIZE=-1>PGOPTION</FONT>
and <FONT SIZE=-1>PGREALM</FONT>
environment variables will be passed on to <I>psql</I> and processed as described
in <I><A HREF="psql.1.html">psql</I>(1)</A>
. <P>
The optional argument <I>dbname</I> specifies the name of the database
to be created. The name must be unique among all Postgres databases. <I>dbname</I>
defaults to the value of the <FONT SIZE=-1>USER</FONT>
environment variable. <P>
<I>createdb</I> understands
the following command-line options:
<DL>
<DT><B>-a</B> system </DT>
<DD>Specifies an authentication
system <I>system</I> (see <I><A HREF="pgintro.1.html">pgintro</I>(1)</A>
) to use in connecting to the <I>postmaster</I>
process. This option no longer has any effect. </DD>
<DT><B>-D</B> dbpath </DT>
<DD>Specifies the
alternate database location for this database. </DD>
<DT><B>-h</B> host </DT>
<DD>Specifies the hostname
of the machine on which the <I>postmaster</I> is running. Defaults to the using
local Unix domain sockets. </DD>
<DT><B>-p</B> port </DT>
<DD>Specifies the Internet TCP/IP port or
local Unix domain socket file extension on which the <I>postmaster</I> is listening
for connections. Defaults to 5432, or the value of the <FONT SIZE=-1>PGPORT</FONT>
environment
variable (if set). </DD>
<DT><B>-u</B> </DT>
<DD>Use password authentication. Prompts for username
and password. </DD>
</DL>
<H2><A NAME="sect3" HREF="#toc3">EXAMPLES </A></H2>
# create the demo database using the postmaster
on the local host, port 5432. <BR>
createdb demo <BR>
# create the demo database
using the postmaster on host eden, <BR>
# port 5000. <BR>
createdb -p 5000 -h eden
demo <BR>
<H2><A NAME="sect4" HREF="#toc4">FILES </A></H2>
<DL>
<DT>$PGDATA/base/<I>dbname </I> </DT>
<DD>The location of the files corresponding
to the database <I>dbname</I>. </DD>
</DL>
<H2><A NAME="sect5" HREF="#toc5">SEE ALSO </A></H2>
<A HREF="createdb.l.html">createdb(l)</A>
, <A HREF="destroydb.1.html">destroydb(1)</A>
, <A HREF="initdb.1.html">initdb(1)</A>
,
<A HREF="psql.1.html">psql(1)</A>
, <A HREF="postmaster.1.html">postmaster(1)</A>
.
<H2><A NAME="sect6" HREF="#toc6">DIAGNOSTICS </A></H2>
<DL>
<DT><B>Error: Failed to connect to backend
(host=</B><I>xxx</I><B>, port=</B><I>xxx</I><B>)</B> </DT>
<DD><I>Createdb</I> could not attach to the <I>postmaster</I> process
on the specified host and port. If you see this message, ensure that the
<I>postmaster</I> is running on the proper host and that you have specified the
proper port. If your site uses an authentication system, ensure that you
have obtained the required authentication credentials. </DD>
<DT><B>user `</B><I>username</I><B>' is
not in `pg_user'</B> </DT>
<DD>You do not have a valid entry in the relation `pg_user'
and cannot do anything with Postgres at all; contact your Postgres site
administrator. </DD>
<DT><B>user `</B><I>username</I><B>' is not allowed to create/destroy databases</B>
</DT>
<DD>You do not have permission to create new databases; contact your Postgres
site administrator. </DD>
<DT><I>dbname</I><B> already exists</B> </DT>
<DD>The database already exists.
</DD>
<DT><B>database creation failed on</B><I> dbname</I> </DT>
<DD>An internal error occurred in <I>psql</I>
or the backend server. Ensure that your Postgres site administrator has
properly installed Postgres and initialized the site with <I>initdb</I>. </DD>
</DL>
<P>
<HR><P>
<A NAME="toc"><B>Table of Contents</B></A><P>
<UL>
<LI><A NAME="toc0" HREF="#sect0">NAME</A></LI>
<LI><A NAME="toc1" HREF="#sect1">SYNOPSIS</A></LI>
<LI><A NAME="toc2" HREF="#sect2">DESCRIPTION</A></LI>
<LI><A NAME="toc3" HREF="#sect3">EXAMPLES</A></LI>
<LI><A NAME="toc4" HREF="#sect4">FILES</A></LI>
<LI><A NAME="toc5" HREF="#sect5">SEE ALSO</A></LI>
<LI><A NAME="toc6" HREF="#sect6">DIAGNOSTICS</A></LI>
</UL>
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