DescribeSlowLogs - PolarDB - Alibaba Cloud Documentation Center

Queries the slow query log statistics for a PolarDB cluster.

Operation description

Note

This operation is supported only by PolarDB for MySQL.
Starting September 1, 2024, the value of the SQLHash field will change when you call this operation due to an optimization of the SQL templating algorithm. For more information, see Optimization of the templating algorithm for slow SQL queries.

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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:DescribeSlowLogs

get

*dbcluster

acs:polardb:{#regionId}:{#accountId}:dbcluster/{#dbclusterId}

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID.	cn-hangzhou
DBClusterId	string	Yes	The cluster ID.	pc-****************
StartTime	string	Yes	The start date of the query. The start date can be up to 31 days earlier than the current date. The date is in the yyyy-MM-ddZ format. The time is in UTC.	2021-05-01Z
EndTime	string	Yes	The end date of the query. The end date cannot be earlier than the start date. The interval between the start date and the end date cannot exceed 31 days. The date is in the yyyy-MM-ddZ format. The time is in UTC.	2021-05-30Z
DBName	string	No	The database name.	PolarDB_MySQL
PageSize	integer	No	The number of records to return on each page. Valid values: 30 to 100. Default value: 30.	30
PageNumber	integer	No	The page number. The value must be a positive integer that does not exceed the maximum value of the integer data type. Default value: 1.	1

Response elements

Element	Type	Description	Example
	object
TotalRecordCount	integer	The total number of records.	5
PageRecordCount	integer	The number of SQL statements on the current page.	6
EndTime	string	The end date of the query.	2021-05-30Z
RequestId	string	The request ID.	2553A660-E4EB-4AF4-A402-8AFF70A49143
PageNumber	integer	The page number.	3
StartTime	string	The start date of the query.	2021-05-01Z
DBClusterId	string	The cluster ID.	pc-****************
Items	object
SQLSlowLog	array<object>	The list of slow query log details.
	object
SQLText	string	The SQL statement.	select id,name from tb_table
ReturnMaxRowCount	integer	The maximum number of rows returned for the SQL statement.	3
CreateTime	string	The date when the data was generated.	2021-05-30Z
MaxExecutionTime	integer	The longest execution time. Unit: seconds.	60
ParseTotalRowCounts	integer	The total number of scanned rows.	2
TotalLockTimes	integer	The total lock duration. Unit: seconds.	1
TotalExecutionTimes	integer	The total execution duration. Unit: seconds.	2
DBNodeId	string	The node ID.	pi-***************
SQLHASH	string	The unique identifier (ID) of the SQL statement in the slow query log statistics. You can use this ID to query the details of the slow query.	U2FsdGVkxxxx
ParseMaxRowCount	integer	The maximum number of scanned rows.	1
MaxLockTime	integer	The longest lock duration. Unit: seconds.	1
ReturnTotalRowCounts	integer	The total number of rows returned for the SQL statement.	1
DBName	string	The database name.	PolarDB_MySQL
TotalExecutionCounts	integer	The total number of executions.	2
MaxExecutionTimeMs	string
Engine	string	The database engine.	polardb_mysql

Examples

Success response

JSON format

{
  "TotalRecordCount": 5,
  "PageRecordCount": 6,
  "EndTime": "2021-05-30Z",
  "RequestId": "2553A660-E4EB-4AF4-A402-8AFF70A49143",
  "PageNumber": 3,
  "StartTime": "2021-05-01Z",
  "DBClusterId": "pc-****************",
  "Items": {
    "SQLSlowLog": [
      {
        "SQLText": "select id,name from tb_table",
        "ReturnMaxRowCount": 3,
        "CreateTime": "2021-05-30Z",
        "MaxExecutionTime": 60,
        "ParseTotalRowCounts": 2,
        "TotalLockTimes": 1,
        "TotalExecutionTimes": 2,
        "DBNodeId": "pi-***************",
        "SQLHASH": "U2FsdGVkxxxx",
        "ParseMaxRowCount": 1,
        "MaxLockTime": 1,
        "ReturnTotalRowCounts": 1,
        "DBName": "PolarDB_MySQL",
        "TotalExecutionCounts": 2,
        "MaxExecutionTimeMs": ""
      }
    ]
  },
  "Engine": "polardb_mysql"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidStartTime.Malformed	The specified parameter StartTime is not valid.	The specified StartTime parameter is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.