Tablespace Dialog v8
Use The Tablespace
dialog to define a tablespace. A tablespace allows superusers to define an alternative location on the file system where the data files containing database objects (such as tables and indexes) reside. Tablespaces are only supported on systems that support symbolic links. Note that a tablespace cannot be used independently of the cluster in which it is defined.
The Tablespace
dialog organizes the definition of a tablespace through the following tabs: General
, Definition, Parameters
, and Security
. The SQL tab displays the SQL code generated by dialog selections.
- Use the
Name
field to identify the tablespace with a descriptive name. The name cannot begin with pg_; these names are reserved for system tablespaces. - Select the owner of the tablespace from the drop-down listbox in the Owner field.
- Store notes about the tablespace in the
Comment
field.
Click the Definition
tab to continue.
- Use the
Location
field to specify an absolute path to a directory that will contain the tablespace.
Click the Parameters
tab to continue.
Use the Parameters
tab to set parameters for the tablespace. Click the Add icon (+) to add a row to the table below.
- Use the drop-down listbox next to
Name
to select a parameter. - Use the
Value
field to set a value for the parameter.
Click the Add
icon (+) to specify each additional parameter; to discard a parameter, click the trash icon to the left of the row and confirm deletion in the Delete Row
dialog.
Click the Security
tab to continue.
Use the Security
tab to assign privileges and define security labels for the tablespace.
Use the Privileges
panel to assign security privileges. Click the Add
icon (+) to assign a set of privileges:
- Select the name of the role from the drop-down listbox in the
Grantee
field. - The current user, who is the default grantor for granting the privilege, is displayed in the
Grantor
field. - Click inside the
Privileges
field. Check the boxes to the left of one or more privileges to grant the selected privileges to the specified user.
Click the Add
icon to assign additional sets of privileges; to discard a privilege, click the trash icon to the left of the row and confirm deletion in the Delete Row
popup.
Use the Security Labels
panel to define security labels applied to the tablespace. Click the Add
icon (+) to add each security label selection:
- Specify a security label provider in the
Provider
field. The named provider must be loaded and must consent to the proposed labeling operation. - Specify a a security label in the
Security Label
field. The meaning of a given label is at the discretion of the label provider. PostgreSQL places no restrictions on whether or how a label provider must interpret security labels; it merely provides a mechanism for storing them.
To discard a security label, click the trash icon to the left of the row and confirm deletion in the Delete Row
popup.
Click the SQL
tab to continue.
Your entries in the Tablespace
dialog generate a SQL command (see an example below). Use the SQL
tab for review; revisit or switch tabs to make any changes to the SQL command.
Example
The following is an example of the sql command generated by user selections in the Tablespace
dialog:
The example shown demonstrates creating a tablespace named space_01
. It has a random_page_cost value equal to 1
.
- Click the
Info
button (i) to access online help. - Click the
Save
button to save work. - Click the
Cancel
button to exit without saving work. - Click the
Reset
button to restore configuration parameters.
- On this page
- Example