### 26.4.22 The INFORMATION\_SCHEMA INNODB\_SESSION\_TEMP\_TABLESPACES Table

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 The [`INNODB_SESSION_TEMP_TABLESPACES`](information-schema-innodb-session-temp-tablespaces-table.html) table provides metadata about session temporary tablespaces used for internal and user-created temporary tables. This table was added in MySQL 8.0.13.

 The [`INNODB_SESSION_TEMP_TABLESPACES`](information-schema-innodb-session-temp-tablespaces-table.html) table has these columns:

* `ID`

   The process or session ID.

* `SPACE`

   The tablespace ID. A range of 400 thousand space IDs is reserved for session temporary tablespaces. Session temporary tablespaces are recreated each time the server is started. Space IDs are not persisted when the server is shut down and may be reused.

* `PATH`

   The tablespace data file path. A session temporary tablespace has an `ibt` file extension.

* `SIZE`

   The size of the tablespace, in bytes.

* `STATE`

   The state of the tablespace. `ACTIVE` indicates that the tablespace is currently used by a session. `INACTIVE` indicates that the tablespace is in the pool of available session temporary tablespaces.

* `PURPOSE`

   The purpose of the tablespace. `INTRINSIC` indicates that the tablespace is used for optimized internal temporary tables use by the optimizer. `SLAVE` indicates that the tablespace is allocated for storing user-created temporary tables on a replication slave. `USER` indicates that the tablespace is used for user-created temporary tables. `NONE` indicates that the tablespace is not in use.

#### Example

```
mysql> SELECT * FROM INFORMATION_SCHEMA.INNODB_SESSION_TEMP_TABLESPACES;
+----+------------+----------------------------+-------+----------+-----------+
| ID | SPACE      | PATH                       | SIZE  | STATE    | PURPOSE   |
+----+------------+----------------------------+-------+----------+-----------+
|  8 | 4294566162 | ./#innodb_temp/temp_10.ibt | 81920 | ACTIVE   | INTRINSIC |
|  8 | 4294566161 | ./#innodb_temp/temp_9.ibt  | 98304 | ACTIVE   | USER      |
|  0 | 4294566153 | ./#innodb_temp/temp_1.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566154 | ./#innodb_temp/temp_2.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566155 | ./#innodb_temp/temp_3.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566156 | ./#innodb_temp/temp_4.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566157 | ./#innodb_temp/temp_5.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566158 | ./#innodb_temp/temp_6.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566159 | ./#innodb_temp/temp_7.ibt  | 81920 | INACTIVE | NONE      |
|  0 | 4294566160 | ./#innodb_temp/temp_8.ibt  | 81920 | INACTIVE | NONE      |
+----+------------+----------------------------+-------+----------+-----------+
```

#### Notes

* You must have the [`PROCESS`](privileges-provided.html#priv_process) privilege to query this table.

* Use the `INFORMATION_SCHEMA` [`COLUMNS`](information-schema-columns-table.html) table or the [`SHOW COLUMNS`](show-columns.html) statement to view additional information about the columns of this table, including data types and default values.

