## 52.54. `pg_tablespace`

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 The catalog `pg_tablespace` 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 cluster: there is only one copy of `pg_tablespace` per cluster, not one per database.

**Table 52.54. `pg_tablespace` Columns**

|                                                      Column Type<br/><br/> Description                                                     |
|--------------------------------------------------------------------------------------------------------------------------------------------|
|                                                    `oid` `oid`<br/><br/> Row identifier                                                    |
|                                                 `spcname` `name`<br/><br/> Tablespace name                                                 |
|`spcowner` `oid` (references [`pg_authid`](catalog-pg-authid.html).`oid`)<br/><br/> Owner of the tablespace, usually the user who created it|
|                       `spcacl` `aclitem[]`<br/><br/> Access privileges; see [Section 5.7](ddl-priv.html) for details                       |
|                            `spcoptions` `text[]`<br/><br/> Tablespace-level options, as “keyword=value” strings                            |

