| title | sys.dm_pdw_lock_waits (Transact-SQL) | Microsoft Docs | |
|---|---|---|
| ms.custom | ||
| ms.date | 03/07/2017 | |
| ms.prod | sql | |
| ms.technology | data-warehouse | |
| ms.reviewer | ||
| ms.topic | language-reference | |
| dev_langs |
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| ms.assetid | 8ef966f8-d14e-40d3-9626-3508ada9b8fb | |
| author | ronortloff | |
| ms.author | rortloff | |
| monikerRange | >= aps-pdw-2016 || = azure-sqldw-latest || = sqlallproducts-allversions |
[!INCLUDEtsql-appliesto-xxxxxx-xxxx-asdw-pdw-md]
Holds information about the requests that are waiting for locks.
| Column Name | Data Type | Description | Range |
|---|---|---|---|
| wait_id | bigint | Position of the request in the waiting list. | 0-based ordinal. This is not unique across all wait entries. |
| session_id | nvarchar(32) | ID of the session in which the wait state occurred. | See session_id in sys.dm_pdw_exec_sessions (Transact-SQL). |
| type | nvarchar(255) | Type of wait this entry represents. | Possible values: Shared SharedUpdate ExclusiveUpdate Exclusive |
| object_type | nvarchar(255) | Type of object that is affected by the wait. | Possible values: OBJECT DATABASE SYSTEM SCHEMA APPLICATION |
| object_name | nvarchar(386) | Name or GUID of the specified object that was affected by the wait. | Tables and views are displayed with three-part names. Indexes and statistics are displayed with four-part names. Names, principals, and databases are string names. |
| request_id | nvarchar(32) | ID of the request on which the wait state occurred. | ID of the request. This is a GUID for load requests. |
| request_time | datetime | Time at which the lock or resource was requested. | |
| acquire_time | datetime | Time at which the lock or resource was acquired. | |
| state | nvarchar(50) | State of the wait state. | [!INCLUDEssInfoNA] |
| priority | int | Priority of the waiting item. | [!INCLUDEssInfoNA] |
SQL Data Warehouse and Parallel Data Warehouse Dynamic Management Views (Transact-SQL)