ALTER TABLESPACE(7) PostgreSQL 16.7 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 16.7 2025 ALTER TABLESPACE(7)
postgresql 16.7 - Generated Sat Mar 22 10:20:27 CDT 2025