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AnalyticDB:ListNamespaces

Last Updated:Aug 28, 2026

Queries the namespaces in an AnalyticDB for PostgreSQL instance or workspace.

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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

gpdb:ListNamespaces

create

*Namespace

acs:gpdb:{#regionId}:{#accountId}:namespace/{#DBInstanceId}

None None

Request parameters

Parameter

Type

Required

Description

Example

DBInstanceId

string

No

The instance ID.

Note

You can call the DescribeDBInstances operation to query the information about all AnalyticDB for PostgreSQL instances within a region, including instance IDs.

gp-bp152460513z****

ManagerAccount

string

Yes

The name of the manager account that has the rds_superuser permission.

Note

You can create an account on the Account Management page of the AnalyticDB for PostgreSQL console or by calling the CreateAccount API operation.

testaccount

ManagerAccountPassword

string

Yes

The password of the manager account.

testpassword

RegionId

string

Yes

The region ID of the instance.

cn-hangzhou

WorkspaceId

string

No

The workspace ID. A workspace consists of multiple AnalyticDB for PostgreSQL instances. You must specify either WorkspaceId or DBInstanceId. If you specify both, WorkspaceId takes precedence.

gp-ws-*****

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

ABB39CC3-4488-4857-905D-2E4A051D0521

Count

integer

The total number of entries returned.

1

Namespaces

object

Namespace

array

The list of queried namespaces.

string

The name of the namespace.

["mynamespace"]

RegionId

string

The region ID of the instance.

cn-hangzhou

DBInstanceId

string

The instance ID.

gp-bp152460513z****

Message

string

The response message.

Successful

Status

string

Whether the request was successful. Valid values:

  • success

  • fail

success

Examples

Success response

JSON format

{
  "RequestId": "ABB39CC3-4488-4857-905D-2E4A051D0521",
  "Count": 1,
  "Namespaces": {
    "Namespace": [
      "[\"mynamespace\"]"
    ]
  },
  "RegionId": "cn-hangzhou",
  "DBInstanceId": "gp-bp152460513z****",
  "Message": "Successful",
  "Status": "success"
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.