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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 >ALTER TABLESPACE</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="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="ALTER TABLE" HREF="sql-altertable.html"><LINK REL="NEXT" TITLE="ALTER TEXT SEARCH CONFIGURATION" HREF="sql-altertsconfig.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="REFENTRY" ><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="ALTER TABLE" HREF="sql-altertable.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="ALTER TEXT SEARCH CONFIGURATION" HREF="sql-altertsconfig.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-ALTERTABLESPACE" ></A >ALTER TABLESPACE</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN65427" ></A ><H2 >Name</H2 >ALTER TABLESPACE -- change the definition of a tablespace</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN65432" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >ALTER TABLESPACE <TT CLASS="REPLACEABLE" ><I >name</I ></TT > RENAME TO <TT CLASS="REPLACEABLE" ><I >new_name</I ></TT > ALTER TABLESPACE <TT CLASS="REPLACEABLE" ><I >name</I ></TT > OWNER TO <TT CLASS="REPLACEABLE" ><I >new_owner</I ></TT > ALTER TABLESPACE <TT CLASS="REPLACEABLE" ><I >name</I ></TT > SET ( <TT CLASS="REPLACEABLE" ><I >tablespace_option</I ></TT > = <TT CLASS="REPLACEABLE" ><I >value</I ></TT > [, ... ] ) ALTER TABLESPACE <TT CLASS="REPLACEABLE" ><I >name</I ></TT > RESET ( <TT CLASS="REPLACEABLE" ><I >tablespace_option</I ></TT > [, ... ] )</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN65443" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >ALTER TABLESPACE</TT > changes the definition of a tablespace. </P ><P > You must own the tablespace to use <TT CLASS="COMMAND" >ALTER TABLESPACE</TT >. To alter the owner, you must also be a direct or indirect member of the new owning role. (Note that superusers have these privileges automatically.) </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN65449" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >name</I ></TT ></DT ><DD ><P > The name of an existing tablespace. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >new_name</I ></TT ></DT ><DD ><P > The new name of the tablespace. The new name cannot begin with <TT CLASS="LITERAL" >pg_</TT >, as such names are reserved for system tablespaces. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >new_owner</I ></TT ></DT ><DD ><P > The new owner of the tablespace. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >tablespace_parameter</I ></TT ></DT ><DD ><P > A tablespace parameter to be set or reset. Currently, the only available parameters are <TT CLASS="VARNAME" >seq_page_cost</TT > and <TT CLASS="VARNAME" >random_page_cost</TT >. Setting either value for a particular tablespace will override the planner's usual estimate of the cost of reading pages from tables in that tablespace, as established by the configuration parameters of the same name (see <A HREF="runtime-config-query.html#GUC-SEQ-PAGE-COST" >seq_page_cost</A >, <A HREF="runtime-config-query.html#GUC-RANDOM-PAGE-COST" >random_page_cost</A >). This may be useful if one tablespace is located on a disk which is faster or slower than the remainder of the I/O subsystem. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN65477" ></A ><H2 >Examples</H2 ><P > Rename tablespace <TT CLASS="LITERAL" >index_space</TT > to <TT CLASS="LITERAL" >fast_raid</TT >: </P><PRE CLASS="PROGRAMLISTING" >ALTER TABLESPACE index_space RENAME TO fast_raid;</PRE ><P> </P ><P > Change the owner of tablespace <TT CLASS="LITERAL" >index_space</TT >: </P><PRE CLASS="PROGRAMLISTING" >ALTER TABLESPACE index_space OWNER TO mary;</PRE ><P></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN65486" ></A ><H2 >Compatibility</H2 ><P > There is no <TT CLASS="COMMAND" >ALTER TABLESPACE</TT > statement in the SQL standard. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN65490" ></A ><H2 >See Also</H2 ><A HREF="sql-createtablespace.html" >CREATE TABLESPACE</A >, <A HREF="sql-droptablespace.html" >DROP TABLESPACE</A ></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="sql-altertable.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="sql-altertsconfig.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ALTER TABLE</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ALTER TEXT SEARCH CONFIGURATION</TD ></TR ></TABLE ></DIV ></BODY ></HTML >