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_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 and effective_io_concurrency. 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 seq_page_cost, random_page_cost,
           effective_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))