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'\" t .\" Title: ALTER TABLESPACE .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/> .\" Date: 2017-11-06 .\" Manual: PostgreSQL 9.2.24 Documentation .\" Source: PostgreSQL 9.2.24 .\" Language: English .\" .TH "ALTER TABLESPACE" "7" "2017-11-06" "PostgreSQL 9.2.24" "PostgreSQL 9.2.24 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" ALTER_TABLESPACE \- change the definition of a tablespace .\" ALTER TABLESPACE .SH "SYNOPSIS" .sp .nf ALTER TABLESPACE \fIname\fR RENAME TO \fInew_name\fR ALTER TABLESPACE \fIname\fR OWNER TO \fInew_owner\fR ALTER TABLESPACE \fIname\fR SET ( \fItablespace_option\fR = \fIvalue\fR [, \&.\&.\&. ] ) ALTER TABLESPACE \fIname\fR RESET ( \fItablespace_option\fR [, \&.\&.\&. ] ) .fi .SH "DESCRIPTION" .PP \fBALTER TABLESPACE\fR changes the definition of a tablespace\&. .PP You must own the tablespace to use \fBALTER TABLESPACE\fR\&. 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\&.) .SH "PARAMETERS" .PP \fIname\fR .RS 4 The name of an existing tablespace\&. .RE .PP \fInew_name\fR .RS 4 The new name of the tablespace\&. The new name cannot begin with pg_, as such names are reserved for system tablespaces\&. .RE .PP \fInew_owner\fR .RS 4 The new owner of the tablespace\&. .RE .PP \fItablespace_parameter\fR .RS 4 A tablespace parameter to be set or reset\&. Currently, the only available parameters are \fIseq_page_cost\fR and \fIrandom_page_cost\fR\&. Setting either value for a particular tablespace will override the planner\*(Aqs usual estimate of the cost of reading pages from tables in that tablespace, as established by the configuration parameters of the same name (see seq_page_cost, random_page_cost)\&. 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\&. .RE .SH "EXAMPLES" .PP Rename tablespace index_space to fast_raid: .sp .if n \{\ .RS 4 .\} .nf ALTER TABLESPACE index_space RENAME TO fast_raid; .fi .if n \{\ .RE .\} .PP Change the owner of tablespace index_space: .sp .if n \{\ .RS 4 .\} .nf ALTER TABLESPACE index_space OWNER TO mary; .fi .if n \{\ .RE .\} .SH "COMPATIBILITY" .PP There is no \fBALTER TABLESPACE\fR statement in the SQL standard\&. .SH "SEE ALSO" CREATE TABLESPACE (\fBCREATE_TABLESPACE\fR(7)), DROP TABLESPACE (\fBDROP_TABLESPACE\fR(7))