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63 lines
1.7 KiB
Plaintext
63 lines
1.7 KiB
Plaintext
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$PostgreSQL: pgsql/doc/src/sgml/ref/pg_controldata.sgml,v 1.10 2007/02/20 18:10:58 momjian Exp $
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PostgreSQL documentation
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-->
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<refentry id="APP-PGCONTROLDATA">
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<refmeta>
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<refentrytitle id="APP-PGCONTROLDATA-TITLE"><application>pg_controldata</application></refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo>Application</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>pg_controldata</refname>
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<refpurpose>display control information of a <productname>PostgreSQL</productname> database cluster</refpurpose>
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</refnamediv>
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<indexterm zone="app-pgcontroldata">
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<primary>pg_controldata</primary>
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</indexterm>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>pg_controldata</command>
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<arg><replaceable class="parameter">datadir</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1 id="R1-APP-PGCONTROLDATA-1">
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<title>Description</title>
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<para>
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<command>pg_controldata</command> prints information initialized during
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<command>initdb</>, such as the catalog version and server locale.
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It also shows information about write-ahead logging and checkpoint
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processing. This information is cluster-wide, and not specific to any one
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database.
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</para>
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<para>
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This utility can only be run by the user who initialized the cluster because
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it requires read access to the data directory.
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You can specify the data directory on the command line, or use
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the environment variable <envar>PGDATA</>.
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</para>
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</refsect1>
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<refsect1>
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<title>Environment</title>
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<variablelist>
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<varlistentry>
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<term><envar>PGDATA</envar></term>
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<listitem>
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<para>
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Default data directory location
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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</refentry>
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