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RDS for PostgreSQL

Managing parameters

DescribeDBInstanceParametersLog

Call the DescribeDBInstanceParametersLog API to query the modification history of an instance parameter.

Request type

Synchronous request.

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Request parameters

Parameter	Type	Required?	Example	Description
InstanceId	String	Yes	postgres-21a3333b****	Instance ID.
StartTime	String	Yes	2023-03-01T00:00:00.000Z	Query start time. Format: yyyy-MM-ddTHH:mm:ss.sssZ (UTC time).
EndTime	String	Yes	2023-03-01T10:00:00.000Z	Query end time. Format: yyyy-MM-ddTHH:mm:ss.sssZ (UTC time).
PageNumber	Integer	No	1	The query offset of the current page. The default value is 1.
PageSize	Integer	No	10	The number of records on each page. The value must be greater than 0 and no more than 1,000. The default value is 10.

Response parameter

Parameter	Type	Example	Description
Total	Integer	1	Total number of records returned by the query.
ParameterChangeLogs	Array of ParameterChangeLogObject	Refer to the sample response.	Parameter modification history list.

ParameterChangeLogObject

Parameter	Type	Example	Description
Name	String	innodb_stats_sample_pages	Parameter name.
Status	String	Applied	State. Values: Applied: effective. Invalid: not effective. Syncing: applying, not yet effective.
NewValue	String	3	Parameter value (after applying template).
OldValue	String	8	Parameter value (before applying template)
ModifyTime	String	2020-03-01T00:00:00.000Z	Timestamp for modifying parameters. Format: yyyy-MM-ddTHH:mm:ss.sssZ (UTC time).

Example

Sample request

POST /?Action=DescribeDBInstanceParametersLog&Version=2022-01-01 HTTP/1.1​
Content-Type: application/json​
Host: rds-postgresql.cn-beijing.volcengineapi.com​
X-Date: 20231002T101010Z​
Authorization: HMAC-SHA256 Credential=AKLTN2I0MmFiNzMxNWE5NDgzMzk4MmVjMTVkODlkZTZ****/20211202/cn-beijing/rds_postgresql/request,SignedHeaders=x-date, Signature=71d31fc7bcf990142851c9833c5656391486cda0ae2e0b8ada733b7c6458****​
{​
    "InstanceId": "postgres-4cdcae5e****",​
    "StartTime": "2023-08-03T12:14:36.000Z",​
    "EndTime": "2023-08-04T23:59:59.000Z"​
}​

Sample response

{​
    "ResponseMetadata": {​
        "RequestId": "20230804120139EC3486A726561A0DDAE6",​
        "Action": "DescribeDBInstanceParametersLog",​
        "Version": "2022-01-01",​
        "Service": "rds_postgresql",​
        "Region": "cn-beijing"​
    },​
    "Result": {​
        "ParameterChangeLogs": [​
            {​
                "ModifyTime": "2023-08-03TZ12:22:41.000Z",​
                "Name": "wal_level",​
                "NewValue": "LOGICAL",​
                "OldValue": "replica",​
                "Status": "Applied"​
            }​
        ],​
        "Total": 1​
    }​
}​

Last updated: 2026.03.31 10:45:18