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ApsaraDB for SelectDB:AllocateInstancePublicConnection

Last Updated:Mar 31, 2026

Applies for a public endpoint for an ApsaraDB for SelectDB instance.

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Test

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

selectdb:AllocateInstancePublicConnection

create

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

DBInstanceId

string

Yes

The instance ID.

selectdb-cn-7213cjv****

NetType

string

Yes

The network type of the endpoint to be applied for. Set the value to Public.

Public

ConnectionStringPrefix

string

Yes

The prefix of the endpoint. Set the parameter to the prefix of the value of ConnectionString.

selectdb-cn-h033cn****-pub-i3

RegionId

string

Yes

The region ID of the instance.

cn-hangzhou

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

5ED62C81-9948-5612-81E1-EA3853752306

InstanceName

string

The name of the instance.

test-instance

TaskId

integer

The task ID.

498115273

Examples

Success response

JSON format

{
  "RequestId": "5ED62C81-9948-5612-81E1-EA3853752306",
  "InstanceName": "test-instance",
  "TaskId": 498115273
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidDBInstanceNetType.Malformed The specified parameter "DBInstanceNetType" is not valid. Illegal network type.
400 DocumentConvertFailed.ExceedFileSizeLimit The conversion has been failed, exceed file size limit. english description1
400 Forbidden User not authorized to operate on the specified resource, or this API does not support RAM. english description1
400 InvalidDBName The specified database name is not allowed. english description1
400 CreateOrderFailed Failed to create order. Failed to create order.
400 InvalidConnectionString.Duplicate The specified connection string already exists. The specified connection string already exists
403 InvalidDBInstanceState.NotSupport The specified instance state does't support this operation. The instance is in a state that does not support the current operation.
403 DBClusterNotSupported The requested operation can not be performed while the cluster is not sale. The requested operation cannot be performed while the cluster is not running.
403 IncorrectDBInstanceState Current DB instance state does not support this operation. english description1
403 InstanceEngineType.NotSupport The instance engine and type does not support operations. english description1
403 MoneyLessThan100 The Account Monet less Than 100. english description1
403 OperationDenied.DBNameAndAccountPrivilegeCount The operation is not permitted due to count of database or account privilege. english description1
403 InsufficientResourceCapacity The resource is out of usage. Not enough resources, please try again later.
404 InvalidDBInstanceId.NotFound The DBInstanceId provided does not exist in our records. Instance does not exist.
404 InvalidClusterInstance.NotFound Specified cluster instance does not exist. SelectDB instance does not exist.
404 DBInstanceLocked The current instance lock mode does not support this operation. english description1
404 IncorrectVswitchId The specified parameter VSwitchId is not valid. english description1
404 InvalidApi.NotFound Specified api is not found, please check your url and method.
404 InvalidDBInstance.NotFound The specified instance is not found. english description1
404 InvalidDBInstanceClass.NotFound The specified instance classic does not exist. english description1
404 InvalidRegionId.NotFound The provided RegionId does not exist in our records. english description1
404 QueryPrice.Failed The inquiry failed. Contact Alibaba Cloud customer service representatives. english description1

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.