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ALTER TABLESPACE(7)	 PostgreSQL 17.5 Documentation	   ALTER TABLESPACE(7)

NAME
       ALTER_TABLESPACE	- change the definition	of a tablespace

SYNOPSIS
       ALTER TABLESPACE	name RENAME TO new_name
       ALTER TABLESPACE	name OWNER TO {	new_owner | CURRENT_ROLE | CURRENT_USER	| SESSION_USER }
       ALTER TABLESPACE	name SET ( tablespace_option = value [,	... ] )
       ALTER TABLESPACE	name RESET ( tablespace_option [, ... ]	)

DESCRIPTION
       ALTER TABLESPACE	can be used to change the definition of	a tablespace.

       You must	own the	tablespace to change the definition of a tablespace.
       To alter	the owner, you must also be able to SET	ROLE to	the new	owning
       role. (Note that	superusers have	these privileges automatically.)

PARAMETERS
       name
	   The name of an existing tablespace.

       new_name
	   The new name	of the tablespace. The new name	cannot begin with pg_,
	   as such names are reserved for system tablespaces.

       new_owner
	   The new owner of the	tablespace.

       tablespace_option
	   A tablespace	parameter to be	set or reset. Currently, the only
	   available parameters	are seq_page_cost, random_page_cost,
	   effective_io_concurrency and	maintenance_io_concurrency. Setting
	   these values	for a particular tablespace will override the
	   planner's usual estimate of the cost	of reading pages from tables
	   in that tablespace, and the executor's prefetching behavior,	as
	   established by the configuration parameters of the same name	(see
	   seq_page_cost, random_page_cost, effective_io_concurrency,
	   maintenance_io_concurrency).	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.

EXAMPLES
       Rename tablespace index_space to	fast_raid:

	   ALTER TABLESPACE index_space	RENAME TO fast_raid;

       Change the owner	of tablespace index_space:

	   ALTER TABLESPACE index_space	OWNER TO mary;

COMPATIBILITY
       There is	no ALTER TABLESPACE statement in the SQL standard.

SEE ALSO
       CREATE TABLESPACE (CREATE_TABLESPACE(7)), DROP TABLESPACE
       (DROP_TABLESPACE(7))

PostgreSQL 17.5			     2025		   ALTER TABLESPACE(7)

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