sys.dm_exec_query_resource_semaphores

Description

Analytics Platform System (PDW) Returns the information about the current query-resource semaphore status in SQL Server. provides general query-execution memory status and allows you to determine whether the system can access enough memory. This view complements memory information obtained from complete picture of server memory status. one row for the regular resource semaphore and another row for the small-query resource

Syntax

sys.dm_pdw_nodes_exec_query_resource_semaphores

Examples

Example 1

ORDER BY

Example 2

sys.dm_exec_query_resource_semaphores

Example 3

sys.dm_os_memory_clerks

Example 4

type
= 'MEMORYCLERK_SQLQERESERVATIONS'

Example 5

sys.dm_exec_query_memory_grants

Example 6

--Find all queries waiting in the memory queue
SELECT
*
FROM sys.dm_exec_query_memory_grants
WHERE grant_time
IS
NULL
;

Example 7

-- retrieve every query plan from the plan cache
USE master
;
GO
SELECT
*
FROM sys.dm_exec_cached_plans cp
CROSS
APPLY sys.dm_exec_query_plan(cp.plan_handle);
GO