Updated on 2026-08-25 GMT+08:00

Querying Lock Snapshots

Function

This API is used to query lock snapshots.

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:clouddba:listInnodbLock

list

Instance

-

-

-

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
das:clouddba:listInnodbLock	list	Instance	-	-	-

URI

GET /v3/{project_id}/connections/{connection_id}/instance/query-snapshots

**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. Only letters and digits are supported. Default Value N/A
connection_id	Yes	String	Definition Connection ID established between a database account and the database. The database user ID is created using the API in Creating an Instance Connection. Constraints N/A Range The value is a UUID containing 36 characters. Only letters, digits, and hyphens (-) are allowed. Default Value N/A

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
module	Yes	Integer	Definition Lock snapshot type Constraints N/A Range 0: MDL lock snapshot 1: InnoDB lock snapshot 2: latest deadlock Default Value N/A
start_at	Yes	Long	Definition Start time in the Unix timestamp format, in milliseconds Constraints N/A Range [0, 2^63 – 1]. The actual value depends on the query result. Default Value N/A
end_at	Yes	Long	Definition End time in the Unix timestamp format, in milliseconds Constraints N/A Range [0, 2^63 – 1]. The actual value depends on the query result. Default Value N/A
per_page	Yes	Integer	Definition Number of records on each page Constraints N/A Range [0, 100]. The actual value depends on the query result. Default Value N/A
cur_page	Yes	Integer	Definition Page number Constraints N/A Range [0, 2^31 – 1]. The actual value depends on the query result. Default Value N/A

Request Parameters

None

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
items	Array of Table 4 objects	Definition Snapshot lock information
count	Integer	Definition Number of snapshots Range N/A

**Table 4** Snapshot
Parameter	Type	Description
id	Long	Definition Snapshot ID Range N/A
status	Integer	Definition Snapshot status Range 0: waiting 1: running 2: failed 3: successful
create_at	Long	Definition Time when a lock snapshot is created Range N/A
find_lock	Integer	Definition Whether a lock is found Range 0: no 1: yes

Example Requests

GET https://das.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/connections/179e525e-0e9c-4dcc-9dd7-ee2f36121e23/instance/query-snapshots?module=1&start_at=1764142298910&end_at=1764747098910&per_page=10&cur_page=1

Example Responses

Status code: 200

Success.

{
    "items": [
        {
            "id": 1159,
            "status": 3,
            "create_at": 1764730758780,
            "find_lock": 0
        }
    ],
    "count": 1
}

Status Codes

Status Code	Description
200	Success.
400	Client error.
500	Server error.

Error Codes

See Error Codes.

Parent topic: Intelligent O&M