pg_dumpall.sgml

关系型数据库 Postgresql 6.5.2

<refentry id="APP-PG-DUMPALL">
 <refmeta>
  <refentrytitle>
   <application>pg_dumpall</application>
  </refentrytitle>
  <refmiscinfo>Application</refmiscinfo>
 </refmeta>
 <refnamediv>
  <refname>
   <application>pg_dumpall</application>
  </refname>
  <refpurpose>
   Extract all <productname>Postgres</productname> databases into a script file
  </refpurpose>
 </refnamediv>
 <refsynopsisdiv>
  <refsynopsisdivinfo>
   <date>1998-10-04</date>
  </refsynopsisdivinfo>
  <synopsis>
pg_dumpall
pg_dumpall [ -h <replaceable class="parameter">host</replaceable> ] [ -p <replaceable class="parameter">port</replaceable> ] [ -a ] [ -d ] [ -D ] [ -o ] [ -s ] [ -u ] [ -v ] [ -x ]
  </synopsis>

  <refsect2 id="R2-APP-PG-DUMPALL-1">
   <refsect2info>
    <date>1998-10-04</date>
   </refsect2info>
   <title>
    Inputs
   </title>
   <para>
    <application>pg_dumpall</application> accepts the following command line arguments:

    <variablelist>
     <varlistentry>
      <term>-a</term>
      <listitem>
       <para>
	Dump out only the data, no schema (definitions).
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-d</term>
      <listitem>
       <para>
	Dump data as proper insert strings.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-D</term>
      <listitem>
       <para>
	Dump data as inserts with attribute names
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-n</term>
      <listitem>
       <para>
	Suppress double quotes around identifiers unless absolutely necessary.
	This may cause trouble loading this dumped data if there are reserved words
	used for identifiers.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-o</term>
      <listitem>
       <para>
	Dump object identifiers (<acronym>OID</acronym>s) for every table.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-s</term>
      <listitem>
       <para>
	Dump out only the schema (definitions), no data.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-u</term>
      <listitem>
       <para>
	Use password authentication. Prompts for username and password.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-v</term>
      <listitem>
       <para>
	Specifies verbose mode
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-x</term>
      <listitem>
       <para>
	Prevent dumping ACLs (grant/revoke commands) and table ownership information.
       </para>
      </listitem>
     </varlistentry>

    </variablelist>
   </para>

   <para>
    <application>pg_dumpall</application> also accepts 
    the following command line arguments for connection parameters:

    <variablelist>
     <varlistentry>
      <term>-h <replaceable class="parameter">host</replaceable></term>
      <listitem>
       <para>
	Specifies the hostname of the machine on which the 
	<application>postmaster</application>
	is running.  Defaults to using a local Unix domain socket
	rather than an IP connection..
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-p <replaceable class="parameter">port</replaceable></term>
      <listitem>
       <para>
	Specifies the Internet TCP/IP port or local Unix domain socket file 
	extension on which the <application>postmaster</application>
	is listening for connections.  The port number defaults to 5432,
	or the value of the <envar>PGPORT</envar>
	environment variable (if set).
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term>-u</term>
      <listitem>
       <para>
	Use password authentication. 
	Prompts for
	<replaceable class="parameter">username</replaceable>
	and <replaceable class="parameter">password</replaceable>.
       </para>
      </listitem>
     </varlistentry>
    </variablelist>
   </para>
  </refsect2>

  <refsect2 id="R2-APP-PG-DUMPALL-2">
   <refsect2info>
    <date>1998-10-04</date>
   </refsect2info>
   <title>
    Outputs
   </title>
   <para>
    <application>pg_dumpall</application> will create a file or
    write to <filename>stdout</filename>.

    <variablelist>
     <varlistentry>
      <term><computeroutput>
Connection to database 'template1' failed.
connectDB() failed: Is the postmaster running and accepting connections at 'UNIX Socket' on port '<replaceable class="parameter">port</replaceable>'?
       </computeroutput></term>
      <listitem>
       <para>
	<application>pg_dumpall</application> could not attach to the 
	<application>postmaster</application> 
	process on the specified host and port.  If you see this message,
	ensure that the <application>postmaster</application> 
	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.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term><computeroutput>
Connection to database '<replaceable class="parameter">dbname</replaceable>' failed.
FATAL 1:  SetUserId: user '<replaceable class="parameter">username</replaceable>' is not in 'pg_shadow'
       </computeroutput></term>
      <listitem>
       <para>
	You do not have a valid entry in the relation <literal>pg_shadow</literal>
	and and will not be allowed to access <productname>Postgres</productname>. 
	Contact your <productname>Postgres</productname> administrator.
       </para>
      </listitem>
     </varlistentry>

     <varlistentry>
      <term><computeroutput>
dumpSequence(<replaceable class="parameter">table</replaceable>): SELECT failed
       </computeroutput></term>
      <listitem>
       <para>
	You do not have permission to read the database.
	Contact your <productname>Postgres</productname> site administrator.
       </para>
      </listitem>
     </varlistentry>
    </variablelist>
   </para>

   <note>
    <para>
     <application>pg_dumpall</application> internally executes
     <command>SELECT</command> statements. If you have problems running
     <application>pg_dumpall</application>,
     make sure you are able to select information from the database using, for
     example, <application>psql</application>.
    </para>
   </note>
  </refsect2>
 </refsynopsisdiv>

 <refsect1 id="R1-APP-PG-DUMPALL-1">
  <refsect1info>
   <date>1998-10-04</date>
  </refsect1info>
  <title>
   Description
  </title>
  <para>
   <application>pg_dumpall</application>
   is a utility for dumping out all Postgres databases into one file.
   It also dumps the pg_shadow table, which is global to all databases.
   <application>pg_dumpall</application> includes in this file the proper commands
   to automatically create each dumped database before loading.
  </para>
  <para>
   <application>pg_dumpall</application> takes all <application>pg_dump</application>
   options, but <option>-f</option>, <option>-t</option> and 
   <replaceable class="parameter">dbname</replaceable>
   should be omitted.
  </para>
  <para>
   Refer to 
   <xref endterm="pg-dump" linkend="app-pg-dump">
   for more information on this capability.
  </para>
 </refsect1>

 <refsect1 id="R1-APP-PG-DUMPALL-2">
  <refsect1info>
   <date>1998-10-04</date>
  </refsect1info>
  <title>
   Usage
  </title>
  <para>
   To dump all databases:

   <programlisting>
% pg_dumpall -o > db.out
   </programlisting>

   <tip>
    <para>
     You can use most <application>pg_dump</application> options
     for <application>pg_dumpall</application>.
    </para>
   </tip>
  </para>
  <para>
   To reload this database:

   <programlisting>
% psql -e template1 < db.out
   </programlisting>
  </para>
  <tip>
   <para>
    You can use most <application>psql</application> options
    when reloading.
   </para>
  </tip>
 </refsect1>
</refentry>

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