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PolarDB:CreateBackup

Last Updated:Jul 09, 2026

Creates a full snapshot backup for a PolarDB cluster.

Operation description

Note
  • Each cluster can have up to three manually created backups at the same time.

  • If the error message Exceeding the daily backup times of this DB cluster is returned, three manually created backups already exist in your cluster. Delete backups before you call this operation.

  • After you call this operation, a backup task is created in the background. If the data volume is large, the backup may take a long time. Wait until the backup is complete.

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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

polardb:CreateBackup

create

*dbcluster

acs:polardb:{#regionId}:{#accountId}:dbcluster/{#dbclusterId}

None None

Request parameters

Parameter

Type

Required

Description

Example

DBClusterId

string

Yes

The cluster ID.

pc-*************

ClientToken

string

No

The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but make sure that the token is unique among different requests. The token is case-sensitive and can contain only ASCII characters. The token can be up to 64 characters in length.

6000170000591aed949d0f54a343f1a4233c1e7d1c5c******

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

F3322AFE-083E-4D77-A074-421301******

BackupJobId

string

The backup set ID.

11111111

Examples

Success response

JSON format

{
  "RequestId": "F3322AFE-083E-4D77-A074-421301******",
  "BackupJobId": "11111111"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidBackupType.Malformed The specified parameter BackupType is not valid. The specified BackupType parameter is invalid.
400 InvalidBackupMethod.Malformed The specified parameter BackupMethod is not valid. The specified BackupMethod parameter is invalid.
403 BackupTimesExceeded The maximum number of backups per day is exceeded. The operation failed. The maximum number of cluster backups (maximum: 5) has been exceeded.
404 InvalidDBClusterId.NotFound The DBClusterId provided does not exist in our records. The specified DBClusterId parameter does not exist in the current record.
404 InvalidDBClusterId.Malformed The specified parameter DBClusterId is not valid. The specified DBClusterId parameter is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.