First pass at docs for pg_restore
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Philip Warner
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doc/src/sgml/ref/pg_restore.sgml
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578
doc/src/sgml/ref/pg_restore.sgml
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<refentry id="APP-PGRESTORE">
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<refmeta>
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<refentrytitle id="app-pgrestore-title">
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<application>pg_restore</application>
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</refentrytitle>
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<refmiscinfo>Application</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>
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<application>pg_restore</application>
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</refname>
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<refpurpose>
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Restore a <PRODUCTNAME>Postgres</PRODUCTNAME> database from an archive file created by
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<APPLICATION>pg_dump</APPLICATION>
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</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>2000-10-11</date>
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</refsynopsisdivinfo>
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<synopsis>
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pg_restore [ <replaceable class="parameter">archive-file</replaceable> ]
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[ -h <replaceable class="parameter">host</replaceable> ]
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[ -p <replaceable class="parameter">port</replaceable> ]
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[ -t <replaceable class="parameter">table</replaceable> ]
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[ -a ] [ -c ] [-C] [-d <name>]
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[-f <replaceable class="parameter">archive-file</replaceable>]
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[-F <replaceable class="parameter">format</replaceable>]
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[ -i <replaceable class="parameter">index</replaceable> ]
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[ -l ] [ -N ] [ -o ] [ -O ]
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[ -P <replaceable class="parameter">function-name</replaceable> ] [ -r ] [ -R ]
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[ -s ] [ -S ] { -T <replaceable class="parameter">trigger</replaceable> ] [ -u ]
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[-U <replaceable class="parameter">contents-file</replaceable> ] [ -v ] [ -x ]
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</synopsis>
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<refsect2 id="R2-APP-PG-RESTORE-1">
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<refsect2info>
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<date>2000-10-11</date>
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</refsect2info>
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<title>
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Inputs
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</title>
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<para>
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<application>pg_restore</application> accepts the following command
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line arguments:
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<variablelist>
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<varlistentry>
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<term><replaceable class="parameter">archive-name</replaceable></term>
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<listitem>
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<para>
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Specifies the location of the archive file to be restored.
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If not specified, and no '-f' option is specified, then STDIN is used.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-a</term>
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<listitem>
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<para>
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Restore only the data, no schema (definitions).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-c</term>
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<listitem>
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<para>
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Clean (drop) schema prior to create.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-C</term>
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<listitem>
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<para>
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Include SQL to create the schema.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-d <replaceable class="parameter">dbname</replaceable></term>
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<listitem>
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<para>
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Connect to database <replaceable class="parameter">dbname</replaceable> and restore
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directly into the database. BLOBs can only be restored by using a direct database connection.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-f</term>
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<listitem>
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<para>
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Specify output file for generated script. Default is STDOUT.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-F <replaceable class="parameter">format</replaceable></term>
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<listitem>
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<para>
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Specify format of the archive.
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It is not necessary to specify the format, since <APPLICATION>pg_restore</APPLICATION> will
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determine the format automatically. If specified, it can be one of the following:
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</para>
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<variablelist>
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<varlistentry>
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<term>t</term>
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<listitem>
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<para>
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archive is a TAR archive. Using this archive format allows reordering and/or
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exclusion of schema elements at the time the database is restored. It is also possible to limit which
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data is reloaded at restore time.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>c</term>
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<listitem>
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<para>
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archive is in the custom format from pg_dump. This is the most flexible format
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in that it allows reordering of data load as well as schema elements.
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This format is also compressed by default.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-i <replaceable class="parameter">index</replaceable></term>
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<listitem>
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<para>
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Restore definition for named <replaceable class="parameter">index</replaceable> only.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-l</term>
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<listitem>
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<para>
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List the contents of the archive. The output of this command can be used with the '-U, --use-list' option
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to restrict and reorder the items that are restored.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-N</term>
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<listitem>
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<para>
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Restore items in the original dump order. By default pg_dump will dump items in an order convenient
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to pg_dump, then save the archive in a modified OID order. This option overrides the OID ordering.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-o</term>
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<listitem>
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<para>
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Restore items in the OID order. By default pg_dump will dump items in an order convenient
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to pg_dump, then save the archive in a modified OID order. This option enforces strict OID ordering.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-O</term>
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<listitem>
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<para>
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Prevent any attempt to restore original object ownership. Objects will be owned by the username used
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to attach to the database.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-P <replaceable class="parameter">procedure-name</replaceable></term>
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<listitem>
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<para>
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Specify a procedure or function to be restored.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-r</term>
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<listitem>
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<para>
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Restore items in modified OID order. By default pg_dump will dump items in an order convenient
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to pg_dump, then save the archive in a modified OID order. Most objects
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will be restored in OID order, but some things (eg. RULES & INDEXES) will be restored at the end of
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the process irrespective of their OIDs. This option is the default.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-R</term>
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<listitem>
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<para>
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Prohibit <APPLICATION>pg_restore</APPLICATION> from issuing any <PROGRAMLISTING>\connect</PROGRAMLISTING>
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statements or reconnecting to the database if directly connected.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-s</term>
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<listitem>
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<para>
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Restore the schema (definitions), no data. Sequence values will be reset.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-S <replaceable class="parameter">username</replaceable></term>
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<listitem>
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<para>
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Specify the superuser username to use when disabling triggers and/or setting ownership of schema elements.
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By default, <APPLICATION>pg_restore</APPLICATION> will use the current username if it is a superuser.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-t <replaceable class="parameter">table</replaceable></term>
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<listitem>
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<para>
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Restore schema/data for <REPLACEABLE CLASS="PARAMETER">table</REPLACEABLE> only.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-T <replaceable class="parameter">trigger</replaceable></term>
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<listitem>
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<para>
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Restore definition of <REPLACEABLE CLASS="PARAMETER">trigger</REPLACEABLE> only.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-u</term>
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<listitem>
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<para>
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Use password authentication. Prompts for username and password.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-U <replaceable class="parameter">list-file</replaceable></term>
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<listitem>
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<para>
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Restore elements in <REPLACEABLE CLASS="PARAMETER">list-file</REPLACEABLE> only, and in the
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order they appear in the file. Lines can be moved and may also be commented out by placing a ';' at the
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start of the line.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-v</term>
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<listitem>
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<para>
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Specifies verbose mode.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-x</term>
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<listitem>
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<para>
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Prevent restoration of ACLs (grant/revoke commands).
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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<para>
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<application>pg_restore</application> also accepts
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the following command line arguments for connection parameters:
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<variablelist>
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<varlistentry>
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<term>-h <replaceable class="parameter">host</replaceable></term>
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<listitem>
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<para>
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Specifies the hostname of the machine on which the
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<application>postmaster</application>
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is running. Defaults to using a local Unix domain socket
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rather than an IP connection.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-p <replaceable class="parameter">port</replaceable></term>
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<listitem>
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<para>
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Specifies the Internet TCP/IP port or local Unix domain socket file
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extension on which the <application>postmaster</application>
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is listening for connections. The port number defaults to 5432,
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or the value of the <envar>PGPORT</envar>
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environment variable (if set).
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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<refsect2 id="R2-APP-PG-RESTORE-2">
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<refsect2info>
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<date>2000-10-11</date>
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</refsect2info>
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<title>
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Outputs
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</title>
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<para>
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<application>pg_restore</application> will create a script file,
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write to <filename>stdout</filename>, or restore a database directly.
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<variablelist>
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<varlistentry>
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<term><computeroutput>
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Connection to database 'template1' failed.
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connectDB() failed: Is the postmaster running and accepting connections
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at 'UNIX Socket' on port '<replaceable class="parameter">port</replaceable>'?
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</computeroutput></term>
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<listitem>
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<para>
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<application>pg_restore</application> could not attach to the
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<application>postmaster</application>
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process on the specified host and port. If you see this message,
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ensure that the <application>postmaster</application>
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is running on the proper host and that you have specified the proper
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port. If your site uses an authentication system, ensure that you
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have obtained the required authentication credentials.
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</para>
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||||||
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</listitem>
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</varlistentry>
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||||||
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<varlistentry>
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||||||
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<term><computeroutput>
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Connection to database '<replaceable class="parameter">dbname</replaceable>' failed.
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FATAL 1: SetUserId: user '<replaceable class="parameter">username</replaceable>' is not in 'pg_shadow'
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</computeroutput></term>
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<listitem>
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<para>
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You do not have a valid entry in the relation <literal>pg_shadow</literal>
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and and will not be allowed to access <productname>Postgres</productname>.
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Contact your <productname>Postgres</productname> administrator.
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</para>
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</listitem>
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||||||
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</varlistentry>
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</variablelist>
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</para>
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<note>
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<para>
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When a direct database connection is specified using the -d option, <application>pg_restore</application>
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internally executes <command>SQL</command> statements. If you have problems running
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||||||
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<application>pg_restore</application>,
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||||||
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make sure you are able to select information from the database using, for
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||||||
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example, <application>psql</application>.
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</para>
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</note>
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</refsect2>
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</refsynopsisdiv>
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<refsect1 id="R1-APP-PG-RESTORE-1">
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<refsect1info>
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<date>2000-10-11</date>
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</refsect1info>
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<title>
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||||||
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Description
|
||||||
|
</title>
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||||||
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<para>
|
||||||
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<application>pg_restore</application> is a utility for restoring a
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||||||
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<productname>Postgres</productname> database dumped by <application>pg_dump</application>
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||||||
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from any one of the non-plain-text output formats.
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||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
The archive files, new with this relase, contain enough information for
|
||||||
|
<application>pg_restore</application> to rebuild the database, but also allow
|
||||||
|
<application>pg_restore</application> to be selective about what is restored,
|
||||||
|
or even to reorder the items prior to being restored. The archive files should
|
||||||
|
also be portable across architectures. <application>pg_dump</application> will
|
||||||
|
produce the queries necessary to re-generate all user-defined types, functions,
|
||||||
|
tables, indices, aggregates, and operators. In addition, all the data is copied
|
||||||
|
out (in text format for scripts) so that it can be readily copied in again.
|
||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
<application>pg_restore</application> reads the archive file and outputs the appropriate
|
||||||
|
SQL in the required order based on the command parameters. Obviously, it can not restore
|
||||||
|
information that is not present in the dump file; so if the dump is made using the
|
||||||
|
'dump data as inserts' option, <application>pg_restore</application> will not be able to
|
||||||
|
load the data using <command>COPY</command> statements.
|
||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
The most flexible output file format is the new 'custom' format (-Fc). It allows for
|
||||||
|
selection and reordering of all archived items, and is compressed by default. The TAR
|
||||||
|
format (-Ft) is not compressed and it is not possible to reorder
|
||||||
|
data load, but it is otherwise quite flexible.
|
||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
To reorder the items, it is first necessary to dump the contents of the archive:
|
||||||
|
<programlisting>
|
||||||
|
$ pg_restore acrhive.file --list > archive.lis
|
||||||
|
</programlisting>
|
||||||
|
This file consists of a header and one line for each item, eg.
|
||||||
|
<programlisting>
|
||||||
|
;
|
||||||
|
; Archive created at Fri Jul 28 22:28:36 2000
|
||||||
|
; dbname: birds
|
||||||
|
; TOC Entries: 74
|
||||||
|
; Compression: 0
|
||||||
|
; Dump Version: 1.4-0
|
||||||
|
; Format: CUSTOM
|
||||||
|
;
|
||||||
|
;
|
||||||
|
; Selected TOC Entries:
|
||||||
|
;
|
||||||
|
2; 145344 TABLE species postgres
|
||||||
|
3; 145344 ACL species
|
||||||
|
4; 145359 TABLE nt_header postgres
|
||||||
|
5; 145359 ACL nt_header
|
||||||
|
6; 145402 TABLE species_records postgres
|
||||||
|
7; 145402 ACL species_records
|
||||||
|
8; 145416 TABLE ss_old postgres
|
||||||
|
9; 145416 ACL ss_old
|
||||||
|
10; 145433 TABLE map_resolutions postgres
|
||||||
|
11; 145433 ACL map_resolutions
|
||||||
|
12; 145443 TABLE hs_old postgres
|
||||||
|
13; 145443 ACL hs_old
|
||||||
|
</programlisting>
|
||||||
|
|
||||||
|
Where semi-colons are comment delimiters, and the numbers at the start of lines refer to the
|
||||||
|
internal archive ID assigned to each item. Lines in the file can be commented out, deleted,
|
||||||
|
and/or reordered. For example,
|
||||||
|
<programlisting>
|
||||||
|
10; 145433 TABLE map_resolutions postgres
|
||||||
|
;2; 145344 TABLE species postgres
|
||||||
|
;4; 145359 TABLE nt_header postgres
|
||||||
|
6; 145402 TABLE species_records postgres
|
||||||
|
;8; 145416 TABLE ss_old postgres
|
||||||
|
</programlisting>
|
||||||
|
</para>
|
||||||
|
<para>
|
||||||
|
Could be used as input to <application>pg_restore</application> and would only restore
|
||||||
|
items 10 and 6, in that order.
|
||||||
|
<programlisting>
|
||||||
|
$ pg_restore acrhive.file --use=archive.lis
|
||||||
|
</programlisting>
|
||||||
|
</para>
|
||||||
|
|
||||||
|
</refsect1>
|
||||||
|
|
||||||
|
<refsect1 id="R1-APP-PG-RESTORE-2">
|
||||||
|
<refsect1info>
|
||||||
|
<date>2000-10-11</date>
|
||||||
|
</refsect1info>
|
||||||
|
<title>
|
||||||
|
Notes
|
||||||
|
</title>
|
||||||
|
<para>
|
||||||
|
See the <application>pg_dump</application> section for details on limitation of
|
||||||
|
<application>pg_dump</application>.
|
||||||
|
</para>
|
||||||
|
<para>
|
||||||
|
The limitations of pg_restore are detailed below.
|
||||||
|
|
||||||
|
<itemizedlist>
|
||||||
|
<listitem>
|
||||||
|
<para>
|
||||||
|
When restoring data to a table, <application>pg_restore</application> emits queries
|
||||||
|
to disable triggers on user tables before inserting the data then emits queries to
|
||||||
|
re-enable them after the data has been inserted. If the restore is stopped in the
|
||||||
|
middle, the system catalogs may be left in the wrong state.
|
||||||
|
</para>
|
||||||
|
</listitem>
|
||||||
|
|
||||||
|
<listitem>
|
||||||
|
<para>
|
||||||
|
<application>pg_restore</application> will not restore BLOBs for a single table. If
|
||||||
|
an archive contains BLOBs, then all BLOBs will be restored.
|
||||||
|
</para>
|
||||||
|
</listitem>
|
||||||
|
|
||||||
|
</itemizedlist>
|
||||||
|
</para>
|
||||||
|
</refsect1>
|
||||||
|
|
||||||
|
<refsect1 id="R1-APP-PG-RESTORE-3">
|
||||||
|
<refsect1info>
|
||||||
|
<date>2000-10-11</date>
|
||||||
|
</refsect1info>
|
||||||
|
<title>
|
||||||
|
Usage
|
||||||
|
</title>
|
||||||
|
<para>
|
||||||
|
To create a custom archive for a database of the same name as the user:
|
||||||
|
|
||||||
|
<programlisting>
|
||||||
|
$ pg_dump -Fc > db.out
|
||||||
|
</programlisting>
|
||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
To reload this database:
|
||||||
|
|
||||||
|
<programlisting>
|
||||||
|
$ pg_restore db.out | psql -e database
|
||||||
|
</programlisting>
|
||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
To dump a database called mydb that contains BLOBs to a TAR file:
|
||||||
|
|
||||||
|
<programlisting>
|
||||||
|
$ pg_dump -Ft mydb --blobs > db.tar
|
||||||
|
</programlisting>
|
||||||
|
</para>
|
||||||
|
|
||||||
|
<para>
|
||||||
|
To reload this database (with BLOBs) to an existing db called newdb:
|
||||||
|
|
||||||
|
<programlisting>
|
||||||
|
$ pg_restore db.tar --db=newdb
|
||||||
|
</programlisting>
|
||||||
|
</para>
|
||||||
|
|
||||||
|
|
||||||
|
</refsect1>
|
||||||
|
</refentry>
|
||||||
|
|
||||||
|
<!-- Keep this comment at the end of the file
|
||||||
|
Local variables:
|
||||||
|
mode: sgml
|
||||||
|
sgml-omittag:nil
|
||||||
|
sgml-shorttag:t
|
||||||
|
sgml-minimize-attributes:nil
|
||||||
|
sgml-always-quote-attributes:t
|
||||||
|
sgml-indent-step:1
|
||||||
|
sgml-indent-data:t
|
||||||
|
sgml-parent-document:nil
|
||||||
|
sgml-default-dtd-file:"../reference.ced"
|
||||||
|
sgml-exposed-tags:nil
|
||||||
|
sgml-local-catalogs:"/usr/lib/sgml/catalog"
|
||||||
|
sgml-local-ecat-files:nil
|
||||||
|
End:
|
||||||
|
-->
|
||||||
Loading…
x
Reference in New Issue
Block a user