Querying Historical Transactions

Function

This API is used to query historical transactions.
Currently, this API is only available to RDS for MySQL. Only historical transactions in the last seven days can be viewed.

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::showCloudDBAInfo	Read	-	-	-	-

URI

GET /v3/{project_id}/instances/{instance_id}/transaction

**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, including only letters and digits. Default Value N/A
instance_id	Yes	String	Definition Unique ID of an instance Constraints N/A Range The value can contain 32 characters, including only letters and digits. Default Value N/A

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
datastore_type	Yes	String	Definition Database type Constraints N/A Range Only RDS for MySQL is supported. Default Value N/A
start_at	Yes	Long	Definition Collection start time Constraints Unix timestamp, in milliseconds Range [0, 2^31-1]. The actual value depends on the query result. Default Value N/A
end_at	Yes	Long	Definition Collection end time Constraints Unix timestamp, in milliseconds Range [0, 2^31-1]. The actual value depends on the query result. Default Value N/A
page_num	No	Integer	Definition Number of pages Constraints N/A Range [1, 2^31-1] Default Value N/A
page_size	No	Integer	Definition Page size Constraints N/A Range 5, 10, 20, and 50 Default Value N/A
order	No	String	Definition Sorting field Constraints N/A Range N/A Default Value N/A
order_by	No	String	Definition Sorting order, which can be ascending or descending Constraints N/A Range asc desc Default Value N/A
last_sec_min	No	Long	Definition Minimum duration Constraints N/A Range N/A Default Value N/A
last_sec_max	No	Long	Definition Maximum duration Constraints N/A Range N/A Default Value N/A

Request Parameters

None

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
total	Integer	Definition Total number of historical transactions Range [0, 2^31-1]
transaction_info_list	Array of Table 4 objects	Definition Historical transaction information Range N/A

**Table 4** transaction_info_list
Parameter	Type	Description
last_sec	Integer	Definition Transaction duration Range N/A
wait_locks	Integer	Definition Number of wait locks Range N/A
hold_locks	Integer	Definition Number of held locks Range N/A
occurrence_time	Integer	Definition Occurrence time Range N/A
detail	String	Definition Transaction content Range N/A
collect_time	Long	Definition Collection time Range N/A

Example Requests

Querying historical transactions

"GET https://das.cn-north-1.myhuaweicloud.com/v3/054c630ff780d4cc2f40c00d7f6fb21d/instances/a77c88dcfd404a64a466ca2cd2f5b8e5in01/transaction?datastore_type=MySQL&start_at=1&end_at=1717399020000"

Example Responses

Status code: 200

Successful response

{
  "total": 1,
  "transaction_info_list": [
    {
      "collect_time": 1717398965000,
      "last_sec": 5,
      "wait_locks": 3,
      "hold_locks": 3,
      "occurrence_time": 1717398965000,
      "detail": "MySQL thread id 17485282, OS thread handle 140455451772672, query id 48549222 xxx root updating\ndelete from dead_lock_test where v1 = 5 and v2 = 5\n*** HOLDS THE LOCK:\nRECORD LOCKS space id 34691 page no 3 n bits 80 index PRIMARY of table `at_cloud_dba_001`.`dead_lock_test` trx id 690888 lock_mode X locks rec but not gap\nRecord lock, heap no 7 PHYSICAL RECORD: n_fields 5; compact format; info bits 0\n"
    }
  ]
}