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ALTER TABLESPACE
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ALTER TABLESPACE

ALTER TABLESPACE — change the definition of a tablespace

Synopsis

ALTER TABLESPACEname RENAME TOnew_nameALTER TABLESPACEname OWNER TO {new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }ALTER TABLESPACEname SET (tablespace_option =value [, ... ] )ALTER TABLESPACEname 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 toSET 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 withpg_, 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 areseq_page_cost,random_page_cost,effective_io_concurrency andmaintenance_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 (seeseq_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 tablespaceindex_space tofast_raid:

ALTER TABLESPACE index_space RENAME TO fast_raid;

Change the owner of tablespaceindex_space:

ALTER TABLESPACE index_space OWNER TO mary;

Compatibility

There is noALTER TABLESPACE statement in the SQL standard.