All Products
Search

This Product

    PolarDB:ModifyCronJobPolicyServerless

    Document Center

    PolarDB:ModifyCronJobPolicyServerless

    Last Updated:Sep 24, 2026

    Modifies a scheduled task policy.

    Try it now

    Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

    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

    polardb:ModifyCronJobPolicyServerless

    update

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    DBClusterId

    string

    Yes

    The cluster ID.

    pc-************
    RegionId

    string

    Yes

    The region ID.

    cn-hangzhou
    CronExpression

    string

    Yes

    The cron expression.

    0 0 13 * * ?
    ScaleMin

    string

    No

    The minimum value. Valid values: 0.25 to 32. The minimum value must be less than or equal to the maximum value. Unit: PCU.

    1
    ScaleMax

    string

    No

    The maximum value. Valid values: 1 to 32. Unit: PCU.

    12
    ScaleRoNumMin

    string

    No

    The minimum number of read-only nodes for scaling. Valid values: 0 to 15.

    2
    ScaleRoNumMax

    string

    No

    The maximum number of read-only nodes for scaling. The value cannot be less than the minimum value. Valid values: 0 to 15.

    4
    AllowShutDown

    string

    No

    Specifies whether to enable No-activity Suspension. Valid values:

    • true: Enabled.

    • false (default): Disabled.

    true
    SecondsUntilAutoPause

    string

    No

    The detection duration for No-activity Suspension. Valid values: 5 to 1440. Unit: minutes. The detection duration must be a multiple of 5 minutes.

    10
    ScaleApRoNumMin

    string

    No

    The minimum number of read-only column store nodes. Valid values: 0 to 15.

    1
    ScaleApRoNumMax

    string

    No

    The maximum number of read-only column store nodes. Valid values: 0 to 15.

    1
    ServerlessRuleCpuEnlargeThreshold

    string

    No

    The CPU scale-up threshold. Valid values: 40 to 100. Unit: %.

    80
    ServerlessRuleCpuShrinkThreshold

    string

    No

    The CPU scale-down threshold. Valid values: 10 to 100. Unit: %. The difference between the scale-up threshold and the scale-down threshold must be at least 30.

    25
    ServerlessRuleMode

    string

    No

    The scaling sensitivity. Valid values:

    • normal: standard.

    • flexible: sensitive.

    normal
    StartTime

    string

    No

    The start time. Specify the time in the yyyy-MM-ddTHH:mm:ssZ format (UTC).

    2020-09-23T01:00:00Z
    EndTime

    string

    Yes

    The end time.

    Specify the time in the ISO 8601 standard in the YYYY-MM-DDTHH:mmZ format. The time must be in UTC.

    2020-02-12T15:00Z
    JobId

    string

    No

    The scheduled task ID.

    8006e51c-dab3-4602-bc69-4f728002c6ce

    Response elements

    Element

    Type

    Description

    Example

    object

    Schema of Response

    RequestId

    string

    Id of the request

    D1401250-910B-57A6-8A6A-D9988A62B1CD

    Examples

    Success response

    JSON format

    {
  "RequestId": "D1401250-910B-57A6-8A6A-D9988A62B1CD"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 InvalidRegionId.Malformed The specified parameter RegionId is not valid. The specified RegionId parameter is invalid.
    400 InvalidStartTime.Malformed The specified parameter StartTime is not valid. The specified StartTime parameter is invalid.
    400 InvalidEndTime.Malformed The specified parameter EndTime is not valid. The specified EndTime parameter is invalid.
    400 InvalidCronJobParam.EndTime The specified endTime is not valid. The specified endTime is invalid.
    400 InvalidCronJobParam.CronExpression The specified cronExpression is not valid. The specified cronExpression is not valid.
    404 InvalidDBClusterId.Malformed The specified parameter DBClusterId is not valid. The specified DBClusterId parameter is invalid.
    404 InvalidJobId.NotFound The Specified jobId does not found. The Specified jobId does not found.
    409 InvalidCronJob.DuplicateJob This instance has tasks with duplicate crontab expressions. This instance has tasks with duplicate crontab expressions.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.