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PolarDB:CreateDB

Last Updated:Sep 10, 2026

Creates a database by calling the CreateDB operation.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

polardbx:CreateDB

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

Yes

The region where the instance resides.

cn-hangzhou

DBInstanceName

string

Yes

The name of the instance.

pxc-**************

AccountName

string

Yes

The name of the account that is authorized to access the created database.

testaccount

Charset

string

Yes

The character set. The following character sets are supported:

  • utf8

  • gbk

  • latin1

  • utf8mb4

utf8mb4

DbName

string

Yes

The name of the database to create.

testdb

AccountPrivilege

string

No

The permissions granted to the account on the new database. Valid values:

  • ReadWrite

  • ReadOnly

  • DMLOnly

  • DDLOnly

ReadWrite

DbDescription

string

No

The description of the database.

db for test

SecurityAccountName

string

No

The name of the security administrator account.

Note

If the three-role mode is enabled, this parameter is required. If the three-role mode is not enabled, this parameter is optional.

securityAccount

SecurityAccountPassword

string

No

The password of the security administrator account.

Note

If the three-role mode is enabled, this parameter is required. If the three-role mode is not enabled, this parameter is optional.

securityPassword

Mode

string

No

The mode selected when creating the database. Valid values:

  • auto: The database supports automatic partitioning. You do not need to specify a partition key when creating a table.

  • drds: The database does not support automatic partitioning. You must use dedicated table and database sharding syntax and specify sharding keys when creating a table.

auto

StoragePoolName

string

No

Response elements

Element

Type

Description

Example

object

Message

string

Empty if the request is successful. An error message is returned if the request fails.

*****

RequestId

string

The request ID.

9B2F3840-5C98-475C-B269-2D5C3A31797C

Success

boolean

Indicates whether the request is successful.

true

Examples

Success response

JSON format

{
  "Message": "*****",
  "RequestId": "9B2F3840-5C98-475C-B269-2D5C3A31797C",
  "Success": true
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.