plans và dung lượng tính theo MB:
SELECT count(*) AS 'Number of Plans', sum(cast(size_in_bytes AS BIGINT))/1024/1024 AS 'Plan Cache Size (MB)' FROM sys.dm_exec_cached_plans --Nếu muốn lấy thêm thông tin SELECT objtype AS 'Cached Object Type', count(*) AS 'Number of Plans', sum(cast(size_in_bytes AS BIGINT))/1024/1024 AS 'Plan Cache Size (MB)', avg(usecounts) AS 'Avg Use Count' FROM sys.dm_exec_cached_plans GROUP BY objtype --Tìm hiểu Ad hoc query, đây thực sự là một vấn đề: SELECT count(*) AS 'Number of Plans', sum(cast(size_in_bytes AS BIGINT))/1024/1024 AS 'Plan Cache Size (MB)' FROM sys.dm_exec_cached_plans WHERE usecounts = 1 AND objtype = 'adhoc'Nếu muốn tìm một Stored Procedure trong Plan cache
SELECT OBJECT_NAME([st].[objectid]), [st].[text], [qs].[execution_count], [qs].[creation_time], [qs].[last_execution_time], [qs].[min_worker_time], [qs].[max_worker_time], [qs].[min_logical_reads], [qs].[max_logical_reads], [qs].[min_elapsed_time], [qs].[max_elapsed_time], [qp].[query_plan] FROM [sys].[dm_exec_query_stats] [qs] CROSS APPLY [sys].[dm_exec_sql_text]([qs].plan_handle) [st] CROSS APPLY [sys].[dm_exec_query_plan]([qs].plan_handle) [qp] WHERE [st].[text] LIKE '%usp_GetCustomerStats%' AND OBJECT_NAME([st].[objectid]) IS NOT NULL;
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