The pg_tablespace system catalog table stores information about the available tablespaces. Tables can be placed in particular tablespaces to aid administration of disk layout. Unlike most system catalogs, pg_tablespace is shared across all databases of a HAWQ system: there is only one copy of pg_tablespace per system, not one per database.

Table 1. pg_catalog.pg_tablespace

column type references description
spcname name   Tablespace name.
spcowner oid pg_authid.oid Owner of the tablespace, usually the user who created it.
spclocation text[]   Deprecated.
spcacl aclitem[]   Tablespace access privileges.
spcprilocations text[]   Deprecated.
spcmrilocations text[]   Deprecated.
spcfsoid oid pg_filespace.oid The object id of the filespace used by this tablespace. A filespace defines directory locations on the master and segments.