ALTER_TABLESPACE(7) - man - phpMan

ALTER TABLESPACE(7)                PostgreSQL 14.23 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 a direct or indirect member of 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 14.23                                2026                             ALTER TABLESPACE(7)