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ApsaraDB for SelectDB:DescribeDBInstanceAttribute

Last Updated:Mar 31, 2026

Retrieves the details of a specified 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:DescribeDBInstanceAttribute

list

*All Resource

*

None

None

Request parameters

Parameter

Type

Required

Description

Example

DBInstanceId

string

Yes

The instance ID.

selectdb-cn-7213cjv****

RegionId

string

Yes

The region ID.

cn-hangzhou

Response elements

Element

Type

Description

Example

object

Schema of Response

RequestId

string

The request ID.

06758CAB-1204-5852-A471-29C87D5C1D0F

Status

string

The state of the instance. Valid values:

  • CREATING: The instance is being created.

  • ACTIVE: The instance is running.

  • RESOURCE_CHANGING: The instance is being upgraded or downgraded.

  • ORDER_PREPARING: The order is being confirmed.

  • READONLY_RESOURCE_CHANGING: The instance configuration is being changed and the instance is write-locked.

  • DELETING: The instance is being deleted.

ACTIVE

SubDomain

string

The zone of the instance .

cn-beijing-h-aliyun

GmtModified

string

The time when the instance was last modified, such as a restart or a public IP address application. The time is in the yyyy-MM-ddTHH:mmZ format and is displayed in UTC.

2023-08-17T09:58Z

LockMode

integer

The lock mode of the instance. The value is lock. The instance is automatically locked when it expires or has an overdue payment.

lock

LockReason

string

The reason why the instance is locked.

nolock

ResourceCpu

integer

The number of CPU cores.

8

StorageSize

integer

The storage size.

400

ObjectStoreSize

integer

The object storage size.

0

MaintainStarttime

string

The start time of the maintenance window.

预留参数,暂不返回

MaintainEndtime

string

The end time of the maintenance window.

预留参数,暂不返回

DBClusterList

array<object>

The information about the clusters to which the instance belongs.

object

The list of clusters.

DbInstanceName

string

The instance name.

实例测试

DbClusterId

string

The cluster ID.

selectdb-cn-h033cjs****-be

DbClusterName

string

The cluster name.

test01

Status

string

The state of the cluster. Valid values:

  • CREATING: The cluster is being created.

  • ACTIVATION: The cluster is running.

  • RESOURCE_CHANGING: The cluster is being upgraded or downgraded.

  • ORDER_PREPARING: The order is being confirmed.

  • READONLY_RESOURCE_CHANGING: The cluster configuration is being changed and the instance is write-locked.

  • DELETING: The cluster is being deleted.

ACTIVATION

CreatedTime

string

The time when the cluster was created.

2023-08-14T09:24:13Z

DbClusterClass

string

The cluster specifications. Valid values:

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

  • selectdb.2xlarge: 8 cores, 32 GB memory.

  • selectdb.4xlarge: 16 cores, 64 GB memory.

  • selectdb.8xlarge: 32 cores, 128 GB memory.

  • selectdb.16xlarge: 64 cores, 256 GB memory.

  • selectdb.24xlarge: 96 cores, 384 GB memory.

  • selectdb.32xlarge: 128 cores, 512 GB memory.

selectdb.2xlarge

CpuCores

integer

The number of CPU cores.

8

Memory

integer

The memory size.

64

CacheStorageType

string

The cache storage type.

cloud_essd

PerformanceLevel

string

The performance level (PL).

PL1

CacheStorageSizeGB

string

The cache storage size. Unit: GB.

200

StartTime

string

The time when the cluster was started.

2023-08-14T09:24:13Z

ChargeType

string

The billing method of the cluster. Valid values:

  • Postpaid: pay-as-you-go

  • Prepaid: subscription

Prepaid

ModifiedTime

string

The time when the cluster was last modified.

2024-07-02T16:35:44+08:00

ScalingRulesEnable

boolean

Indicates whether a scheduled elastic policy is enabled.

false

ZoneId

string

The zone ID.

cn-hangzhou-k

VSwitchId

string

The vSwitch ID.

vsw-t4n8x7jcc8rknon85tqoa

SubDomain

string

The subdomain.

预留参数,暂不返回。

ClusterBinding

string

The target cluster to which the current cluster is attached.

selectdb-cn-7213cjv****-be

ClusterNodeType

string

The node type of the cluster. This parameter is valid only for serverless instances.

Valid values:

  • base :

    The ratio of CPU cores to memory is 1:4 for 1 SCU.

base

ClusterNodeCount

integer

The number of nodes in the cluster. This parameter is valid only for serverless instances.

1

ScaleMax

number

The maximum value for the auto-scaling range of RDS Capacity Units (RCUs) for the instance.

4

ScaleMin

number

The minimum value for the auto-scaling range of RDS Capacity Units (RCUs) for the instance.

0.5

Engine

string

The database type.

selectdb

EngineVersion

string

The database version.

2.4

EngineMinorVersion

string

The minor engine version of the instance.

3.0.1

DBInstanceId

string

The instance ID.

selectdb-cn-7213cjv****

Description

string

The description of the instance.

test

CreateTime

string

The time when the instance was created.

2023-08-14T03:00:42Z

CanUpgradeVersions

array

The engine versions to which the instance can be upgraded.

string

A list of version upgrade information.

test

ChargeType

string

The billing method of the instance. Valid values:

  • Postpaid: pay-as-you-go

  • Prepaid: subscription

Prepaid

ExpireTime

string

The time when the instance expires.

2023-09-17T00:00Z

ResourceGroupId

string

The ID of the resource group to which the instance belongs.

rg-aekzbck4asz3dsa

Tags

array<object>

The information about the tags of the instance.

object

The list of tags.

TagKey

string

The tag key.

testKey

TagValue

string

The tag value.

testValue

RegionId

string

The region ID.

cn-beijing

ZoneId

string

The zone ID of the instance.

cn-beijing-h

VpcId

string

The VPC ID of the instance.

vpc-bp175iuvg8nxqraf2****

VSwitchId

string

The vSwitch ID.

vsw-bp18iztwqrs8qj2nc6nyu

DeployScheme

string

The deployment mode of the instance.

multi_az

MultiZone

array<object>

The multi-zone configuration.

Note
  • This parameter is valid only when DeployScheme is set to multi_az.

object

The list of zones in the multi-zone deployment.

ZoneId

string

The zone ID.

cn-hangzhou-k

VSwitchIds

array

The list of vSwitch IDs.

string

The vSwitch ID.

vsw-bp10dbralpn4bzmgkkh8f

Cidr

string

The CIDR block of the prefix list entry.

113.88.14.211/32

AvailableIpCount

integer

The number of available IP addresses in the zone.

4096

Serverless

boolean

Indicates whether the serverless feature is enabled for the instance.

  • true: The serverless feature is enabled.

  • false: The serverless feature is not enabled.

false

SecGroupConnValid

string

Indicates whether the direct connection feature is enabled for the port in the VPC where the instance resides.

  • true: The direct connection feature is enabled.

  • false: The direct connection feature is not enabled.

false

VirtualClusterList

array<object>

The list of virtual clusters.

object

DbClusterId

string

The cluster ID.

selectdb-vcg-33cjs****-be

DbClusterName

string

The cluster name.

vgcdemo

Status

string

The state of the instance. Valid values:

  • CREATING: The instance is being created.

  • RUNNING: The instance is running.

  • DELETING: The instance is being deleted.

  • UPDATING: The instance is being updated.

UPDATING

CreatedTime

string

The time when the cluster was created.

2025-05-31T21:01:09Z

ActiveClusterId

string

The ID of the primary cluster.

selectdb-xx78***-be

ActiveClusterName

string

The name of the primary cluster.

test1

StandbyClusterId

string

The ID of the standby cluster.

selectdb-x6u7***-be

StandbyClusterName

string

The name of the standby cluster.

test2

Examples

Success response

JSON format

{
  "RequestId": "06758CAB-1204-5852-A471-29C87D5C1D0F",
  "Status": "ACTIVE",
  "SubDomain": "cn-beijing-h-aliyun",
  "GmtModified": "2023-08-17T09:58Z",
  "LockMode": 0,
  "LockReason": "nolock",
  "ResourceCpu": 8,
  "StorageSize": 400,
  "ObjectStoreSize": 0,
  "MaintainStarttime": "预留参数,暂不返回",
  "MaintainEndtime": "预留参数,暂不返回\n",
  "DBClusterList": [
    {
      "DbInstanceName": "实例测试",
      "DbClusterId": "selectdb-cn-h033cjs****-be",
      "DbClusterName": "test01",
      "Status": "ACTIVATION",
      "CreatedTime": "2023-08-14T09:24:13Z",
      "DbClusterClass": "selectdb.2xlarge",
      "CpuCores": 8,
      "Memory": 64,
      "CacheStorageType": "cloud_essd",
      "PerformanceLevel": "PL1",
      "CacheStorageSizeGB": "200",
      "StartTime": "2023-08-14T09:24:13Z",
      "ChargeType": "Prepaid",
      "ModifiedTime": "2024-07-02T16:35:44+08:00",
      "ScalingRulesEnable": false,
      "ZoneId": "cn-hangzhou-k",
      "VSwitchId": "vsw-t4n8x7jcc8rknon85tqoa",
      "SubDomain": "预留参数,暂不返回。",
      "ClusterBinding": "selectdb-cn-7213cjv****-be",
      "ClusterNodeType": "base",
      "ClusterNodeCount": 1,
      "ScaleMax": 4,
      "ScaleMin": 0.5
    }
  ],
  "Engine": "selectdb",
  "EngineVersion": "2.4",
  "EngineMinorVersion": "3.0.1",
  "DBInstanceId": "selectdb-cn-7213cjv****",
  "Description": "test",
  "CreateTime": "2023-08-14T03:00:42Z",
  "CanUpgradeVersions": [
    "test"
  ],
  "ChargeType": "Prepaid",
  "ExpireTime": "2023-09-17T00:00Z",
  "ResourceGroupId": "rg-aekzbck4asz3dsa",
  "Tags": [
    {
      "TagKey": "testKey",
      "TagValue": "testValue"
    }
  ],
  "RegionId": "cn-beijing",
  "ZoneId": "cn-beijing-h",
  "VpcId": "vpc-bp175iuvg8nxqraf2****",
  "VSwitchId": "vsw-bp18iztwqrs8qj2nc6nyu",
  "DeployScheme": "multi_az",
  "MultiZone": [
    {
      "ZoneId": "cn-hangzhou-k",
      "VSwitchIds": [
        "vsw-bp10dbralpn4bzmgkkh8f"
      ],
      "Cidr": "113.88.14.211/32",
      "AvailableIpCount": 4096
    }
  ],
  "Serverless": false,
  "SecGroupConnValid": "false",
  "VirtualClusterList": [
    {
      "DbClusterId": "selectdb-vcg-33cjs****-be",
      "DbClusterName": "vgcdemo",
      "Status": "UPDATING",
      "CreatedTime": "2025-05-31T21:01:09Z",
      "ActiveClusterId": "selectdb-xx78***-be",
      "ActiveClusterName": "test1",
      "StandbyClusterId": "selectdb-x6u7***-be\n",
      "StandbyClusterName": "test2"
    }
  ]
}

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.

400

InvalidDBName.Duplicate

Specified DB name already exists in the This instance.

New Cluster Name

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.

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.