ALTER TABLESPACE
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 its definition. To modify the owner, you must also be a direct or indirect member of the new owning role (note that a superuser automatically has these privileges).
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 set or reset. Currently, the only available parameters are seq_page_cost, random_page_cost, effective_io_concurrency, and maintenance_io_concurrency. Setting these parameters for a specific tablespace will override the planner's estimate of the cost of reading pages from tables in that tablespace, and the executor's prefetch behavior, as established by the configuration parameters of the same name (see seq_page_cost, random_page_cost, effective_io_concurrency, maintenance_io_concurrency). These parameters are useful when a tablespace is located on a disk that is faster or slower than the rest 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;