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PolarDB:ModifyDBClusterMaintainTime

Last Updated:Dec 11, 2025

Modifies the routine maintenance window for a PolarDB cluster.

Operation description

Note

Set the routine maintenance window for the cluster to a time during off-peak hours. Alibaba Cloud performs cluster maintenance during this window to minimize the impact on your business.

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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:ModifyDBClusterMaintainTime

update

*DBCluster

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

None None

Request parameters

Parameter

Type

Required

Description

Example

DBClusterId

string

Yes

The cluster ID.

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

MaintainTime

string

Yes

The maintenance window of the cluster. The format is HH:mmZ- HH:mmZ. For example, 16:00Z-17:00Z indicates that routine maintenance can be performed from 00:00 to 01:00 (UTC+08:00).

Note

The maintenance window must start on the hour and last for one hour.

02:00Z-03:00Z

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

70656639-1416-479F-AF13-D08197******

Examples

Success response

JSON format

{
  "RequestId": "70656639-1416-479F-AF13-D08197******"
}

Error response

JSON format

{
    "RequestId":"70656639-1416-479F-AF13-D08197F9C43B"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidMaintainTime.Malformed The specified parameter MaintainTime is not valid. The specified MaintainTime parameter is invalid.
404 InvalidDBCluster.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.