ModifyParameter - PolarDB - Alibaba Cloud Documentation Center

Debugging

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Request parameters


Parameter	Type	Required	Example	Description
Action	String	Yes	ModifyParameter	The operation that you want to perform. Set the value to ModifyParameter.
RegionId	String	Yes	cn-hangzhou	The ID of the region.
DBInstanceId	String	Yes	pxc-hzjasdyuoo	The ID of the instance.
ParamLevel	String	No	compute	Specifies whether each parameter that you want to modify is used to describe data nodes or storage nodes. The value is an enumeration value. Valid values: compute: The parameter is used to describe data nodes. storage: The parameter is used to describe storage nodes.
Parameters	String	Yes	null	The details about each parameter that you want to modify. The value of the Parameters parameter must be a JSON string that consists of maps. In a map, MapKey specifies the name of a parameter name and MapValue specifies the new value of the parameter.
ClientToken	String	No	FEA5DC20-6D8A-5979-97AA-FC57546ADC20	The client token that is generated by your client. A client token is a unique random string.

Response parameters


Parameter	Type	Example	Description
RequestId	String	FEA5DC20-6D8A-5979-97AA-FC57546ADC20	The ID of the request.

Examples

Sample requests

http(s)://[Endpoint]/?Action=ModifyParameter
&RegionId=cn-hangzhou
&DBInstanceId=pxc-hzjasdyuoo
&ParamLevel=compute
&Parameters={"CONN_POOL_BLOCK_TIMEOUT":6000}
&ClientToken=FEA5DC20-6D8A-5979-97AA-FC57546ADC20
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<ModifyParameterResponse>
    <RequestId>FEA5DC20-6D8A-5979-97AA-FC57546ADC20</RequestId>
</ModifyParameterResponse>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "FEA5DC20-6D8A-5979-97AA-FC57546ADC20"
}

Error codes


HttpCode	Error code	Error message	Description
404	InvalidDBInstance.NotFound	The specified DB instance does not exist.	The error message returned because the specified database instance does not exist.

For a list of error codes, visit the API Error Center.