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    ApsaraDB for SelectDB:CheckCreateDBInstance

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    ApsaraDB for SelectDB:CheckCreateDBInstance

    Last Updated:Jan 27, 2026

    Performs a precheck on the resources required to create an ApsaraDB for SelectDB instance.

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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

    selectdb:CheckCreateDBInstance

    get

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    ResourceGroupId

    string

    No

    The ID of the resource group.

    rg-4690g37929****
    ClientToken

    string

    No

    A client-generated token that is used to ensure the idempotence of the request. The token must be unique among different requests. The token can be up to 64 ASCII characters in length and cannot contain non-ASCII characters.

    AB
    Engine

    string

    No

    The database engine type.

    SelectDB
    EngineVersion

    string

    Yes

    The database engine version.

    3.0
    ChargeType

    string

    Yes

    The billing method of the instance. Valid values:

    • Postpaid: pay-as-you-go.

    • Prepaid: subscription.

    PrePaid
    UsedTime

    integer

    No

    The subscription duration. Valid values:

    • If Period is set to Year, valid values are 1, 2, 3, 4, and 5.

    • If Period is set to Month, valid values are integers from 1 to 12.

    Note

    This parameter is required and takes effect only when ChargeType is set to Prepaid.

    1
    Period

    string

    No

    The unit of the subscription duration. Valid values:

    • Year

    • Month

    Note

    This parameter is required and takes effect only when ChargeType is set to Prepaid.

    Month
    DBInstanceClass

    string

    Yes

    The instance type. Valid values:

    • selectdb.xlarge: 4 cores, 32 GB.

    • selectdb.2xlarge: 8 cores, 64 GB.

    • selectdb.4xlarge: 16 cores, 128 GB.

    • selectdb.8xlarge: 32 cores, 256 GB.

    • selectdb.16xlarge: 64 cores, 512 GB.

    • selectdb.24xlarge: 96 cores, 768 GB.

    • selectdb.32xlarge: 128 cores, 1024 GB.

    Valid values:

    • selectdb.2xlarge :

      8 cores, 64 GB

    • selectdb.4xlarge :

      16 cores, 128 GB

    • selectdb.24xlarge :

      96 cores, 768 GB

    • selectdb.32xlarge :

      128 cores, 1024 GB

    • selectdb.16xlarge :

      64 cores, 512 GB

    • selectdb.xlarge :

      4 cores, 32 GB

    • selectdb.8xlarge :

      32 cores, 256 GB

    selectdb.xlarge
    RegionId

    string

    Yes

    The region ID.

    cn-hangzhou
    ZoneId

    string

    Yes

    The zone ID.

    cn-hangzhou-i
    CacheSize

    integer

    Yes

    The reserved cache size, in GB.

    200
    VpcId

    string

    Yes

    The VPC ID.

    vpc-bp175iuvg8nxqraf2****
    VSwitchId

    string

    Yes

    The vSwitch ID.

    vsw-bp1gzt31twhlo0sa5****
    DBInstanceDescription

    string

    No

    The description of the instance.

    新建实例测试
    ConnectionString

    string

    No

    The connection string of the instance.

    selectdb-cn-7213c8y****-public.selectdbfe.pre.rds.aliyuncs.com
    SecurityIPList

    string

    No

    The IP address whitelist for the instance. Separate multiple IP addresses with commas (,).

    172.16.XX.XX/12,192.168.XX.XX/22

    Response elements

    Element

    Type

    Description

    Example

    object

    The response parameters.

    RequestId

    string

    The request ID.

    ADF42B18-43FD-5100-83A9-BE81AB70C863

    Examples

    Success response

    JSON format

    {
  "RequestId": "ADF42B18-43FD-5100-83A9-BE81AB70C863"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    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.
    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 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 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.
    403 OperationDenied.SpecificClassCodeNotSupported The uid is not in specific classcode whitelist. The selected specification is not open to the current account.
    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
    404 InvalidVPC.NotFound VPC or VSwitch is not valid. Invalid VPC or VSwitch

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.