ALTER TABLESPACE SQL - Language Statements ALTER TABLESPACE change the definition of a tablespace ALTER TABLESPACE ALTER TABLESPACE name RENAME TO newname ALTER TABLESPACE name OWNER TO newowner ALTER TABLESPACE changes the definition of a tablespace. You must own the tablespace to use ALTER 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.) name The name of an existing tablespace. newname The new name of the tablespace. The new name cannot begin with pg_, as such names are reserved for system tablespaces. newowner The new owner of the tablespace. 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; There is no ALTER TABLESPACE statement in the SQL standard.