Modifying Parameters of a Specified Instance

Function

This API is used to modify parameters of a specified instance.

• Before calling an API, you need to understand the API in Authentication.

Constraints

• The following DB engines are supported: MySQL, PostgreSQL, and Microsoft SQL Server.

• The new parameter values must be within the default ranges for specified DB engine versions. For details, see Modifying Parameters of an RDS for MySQL Instance in Relational Database Service User Guide.
• Modifying sensitive parameters, for example, lower_case_table_names, is risky. For details, see "Suggestions on RDS for MySQL Parameter Tuning" in Relational Database Service User Guide.

URI

• URI format

  PUT https://{Endpoint}/v3.1/{project_id}/instances/{instance_id}/configurations

• Parameter description

  Table 1 Parameter description

  Name	Mandatory	Description
  project_id	Yes	Project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.
  instance_id	Yes	Instance ID.

Request

Example Request

• Change parameter values of an RDS for MySQL instance.

  PUT https://{endpoint}/v3.1/0483b6b16e954cb88930a360d2c4e663/instances/dsfae23fsfdsae3435in01/configurations
  
  {
    "values" : { 
      "div_precision_increment": "6",
      "connect_timeout": "20",
      "binlog_checksum" : "CRC32",
      "innodb_purge_threads" : "4"
    } 
  }

• Change parameter values of an RDS for PostgreSQL instance.

  {
    "values" : { 
      "autovacuum" : "on",
      "bytea_output" : "escape",
      "client_encoding" : "UTF8",
      "cpu_tuple_cost" : "0.01"
    } 
  }

• Change parameter values of an RDS for SQL Server instance.

  {
     "values":{
       "max server memory (MB)":"26317",
       "max degree of parallelism":"4"
     }
  }

Response

• Normal response

  Table 3 Parameter description

  Name	Type	Description
  job_id	String	Job ID.
  restart_required	Boolean	Whether a reboot is required. true: A reboot is required. false: A reboot is not required.

• Example normal response

  { 
    "job_id" : "e7a7535b-eb9b-45ac-a83a-020dc5016d94",
    "restart_required" : false
  }

• Abnormal response

  For details, see Abnormal Request Results.

Status Code

• Normal

  200

• Abnormal

  For details, see Status Codes.

Error Code

For details, see Error Codes.