Updated on 2026-08-25 GMT+08:00

Modifying a SQL Throttling Rule

Function

This API is used to modify a SQL throttling rule.
Currently, only PostgreSQL is supported.

Authorization Information

Each account has permissions to call all APIs, but IAM users must have the required permissions specifically assigned.

If you are using role/policy-based authorization, see the required permissions in Permissions Policies and Supported Actions.
If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action

Access Level

Resource Type (*: required)

Condition Key

Alias

Dependencies

das:clouddba:updateSqlLimitRules

Write

Instance

-

-

-

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
das:clouddba:updateSqlLimitRules	Write	Instance	-	-	-

URI

PUT /v3/{project_id}/instances/{instance_id}/sql-limit/rules

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID. Constraints N/A Range The value can contain 32 characters. Only letters and digits are supported. Default Value N/A
instance_id	Yes	String	Definition Instance ID, which uniquely identifies an instance. You can obtain the instance ID from the instance list or instance details. Constraints N/A Range The value can contain 36 characters. Only letters and digits are allowed. Default Value N/A

Request Parameters

**Table 2** Request body parameters
Parameter	Mandatory	Type	Description
datastore_type	Yes	String	Definition Database type Constraints N/A Range postgresql Default Value N/A
sql_limit_rule_ids	Yes	Array of strings	Definition ID of a SQL throttling rule Constraints N/A
database_name	No	String	Definition Database name Constraints N/A Range N/A Default Value N/A
sql_limit_rule	Yes	Objects in Table 3	Definition SQL throttling rule to be modified Constraints N/A Range N/A Default Value N/A

**Table 3** UpdateSqlLimitRuleOption
Parameter	Mandatory	Type	Description
max_concurrency	Yes	Integer	Definition Maximum concurrent SQL statements Constraints N/A Range [0, 2^31-1]. The actual value depends on the query result. Default Value N/A
max_waiting	No	Integer	Definition Maximum waiting time Constraints N/A Range [0, 2^31-1]. The actual value depends on the query result. Default Value N/A

Response Parameters

Status code: 200

None

Example Requests

Creating a SQL throttling rule

PUT https://das.cn-north-1.myhuaweicloud.com/v3/054c630ff780d4cc2f40c00d7f6fb21d/instances/d871e13ee1044e21a473330cd67047cbin01/sql-limit/rules

{
    "datastore_type": "postgresql",
    "database_name": "postgres",
    "sql_limit_rule_ids": [
        "1",
        "4"
    ],
    "sql_limit_rule": {
        "max_concurrency": 5,
        "max_waiting": 5
    }
}

Example Responses

None

Status Codes

Status Code	Description
200	Success
400	Client error
500	Client error

Error Codes

See Error Codes.

Parent topic: Intelligent O&M