人人都是 DBA（XIV）存儲過程信息收集腳本匯編

什么？有個 SQL 執行了 8 秒！

哪里出了問題？臣妾不知道啊，得找 DBA 啊。

DBA 人呢？離職了！！擦！！！

程序員在無處尋求幫助時，就得想辦法自救，努力讓自己變成 "偽 DBA"。

索引

1. 獲取存儲過程 SP 執行次數排名
2. 查看哪個 SP 執行的平均時間最長
3. 查看哪個 SP 執行的平均時間最不穩定
4. 查看哪個 SP 耗費了最多的 CPU 時間
5. 查看哪個 SP 執行的邏輯讀最多
6. 查看哪個 SP 執行的物理讀最多
7. 查看哪個 SP 執行的邏輯寫最多

獲取存儲過程 SP 執行次數排名

SELECT TOP (100) p.[name] AS [SP Name]
    ,qs.execution_count
    ,ISNULL(qs.execution_count / DATEDIFF(Minute, qs.cached_time, GETDATE()), 0) AS [Calls/Minute]
    ,qs.total_worker_time / qs.execution_count AS [AvgWorkerTime]
    ,qs.total_worker_time AS [TotalWorkerTime]
    ,qs.total_elapsed_time
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
ORDER BY qs.execution_count DESC
OPTION (RECOMPILE);

查看哪個 SP 執行的平均時間最長

SELECT TOP (25) p.[name] AS [SP Name]
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.total_elapsed_time
    ,qs.execution_count
    ,ISNULL(qs.execution_count / DATEDIFF(Minute, qs.cached_time, GETDATE()), 0) AS [Calls/Minute]
    ,qs.total_worker_time / qs.execution_count AS [AvgWorkerTime]
    ,qs.total_worker_time AS [TotalWorkerTime]
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
ORDER BY avg_elapsed_time DESC
OPTION (RECOMPILE);

查看哪個 SP 執行的平均時間最不穩定

SELECT TOP (25) p.[name] AS [SP Name]
    ,qs.execution_count
    ,qs.min_elapsed_time
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.max_elapsed_time
    ,qs.last_elapsed_time
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
ORDER BY avg_elapsed_time DESC
OPTION (RECOMPILE);

查看哪個 SP 耗費了最多的 CPU 時間

SELECT TOP (25) p.[name] AS [SP Name]
    ,qs.total_worker_time AS [TotalWorkerTime]
    ,qs.total_worker_time / qs.execution_count AS [AvgWorkerTime]
    ,qs.execution_count
    ,ISNULL(qs.execution_count / DATEDIFF(Minute, qs.cached_time, GETDATE()), 0) AS [Calls/Minute]
    ,qs.total_elapsed_time
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
ORDER BY qs.total_worker_time DESC
OPTION (RECOMPILE);

查看哪個 SP 執行的邏輯讀最多

SELECT TOP (25) p.[name] AS [SP Name]
    ,qs.total_logical_reads AS [TotalLogicalReads]
    ,qs.total_logical_reads / qs.execution_count AS [AvgLogicalReads]
    ,qs.execution_count
    ,ISNULL(qs.execution_count / DATEDIFF(Minute, qs.cached_time, GETDATE()), 0) AS [Calls/Minute]
    ,qs.total_elapsed_time
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
ORDER BY qs.total_logical_reads DESC
OPTION (RECOMPILE);

邏輯讀（Logical Read）主要是給 Memory 形成壓力，可用於觀察比較 Memory 運行情況。

查看哪個 SP 執行的物理讀最多

SELECT TOP (25) p.[name] AS [SP Name]
    ,qs.total_physical_reads AS [TotalPhysicalReads]
    ,qs.total_physical_reads / qs.execution_count AS [AvgPhysicalReads]
    ,qs.execution_count
    ,qs.total_logical_reads
    ,qs.total_elapsed_time
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
    AND qs.total_physical_reads > 0
ORDER BY qs.total_physical_reads DESC
    ,qs.total_logical_reads DESC
OPTION (RECOMPILE);

物理讀（Physical Read）主要是給磁盤 I/O 形成壓力，可以用於觀察比較 I/O 運行情況。

查看哪個 SP 執行的邏輯寫最多

SELECT TOP (25) p.[name] AS [SP Name]
    ,qs.total_logical_writes AS [TotalLogicalWrites]
    ,qs.total_logical_writes / qs.execution_count AS [AvgLogicalWrites]
    ,qs.execution_count
    ,ISNULL(qs.execution_count / DATEDIFF(Minute, qs.cached_time, GETDATE()), 0) AS [Calls/Minute]
    ,qs.total_elapsed_time
    ,qs.total_elapsed_time / qs.execution_count AS [avg_elapsed_time]
    ,qs.cached_time
FROM sys.procedures AS p WITH (NOLOCK)
INNER JOIN sys.dm_exec_procedure_stats AS qs WITH (NOLOCK) ON p.[object_id] = qs.[object_id]
WHERE qs.database_id = DB_ID()
    AND qs.total_logical_writes > 0
ORDER BY qs.total_logical_writes DESC
OPTION (RECOMPILE);

邏輯寫（Logical Write）即與 Memory 相關，也與 Disk I/O 相關。通過數據可以判斷出寫 I/O 最昂貴的存儲過程。

 

《人人都是 DBA》系列文章索引：

序號	名稱
1	人人都是 DBA（I）SQL Server 體系結構
2	人人都是 DBA（II）SQL Server 元數據
3	人人都是 DBA（III）SQL Server 調度器
4	人人都是 DBA（IV）SQL Server 內存管理
5	人人都是 DBA（V）SQL Server 數據庫文件
6	人人都是 DBA（VI）SQL Server 事務日志
7	人人都是 DBA（VII）B 樹和 B+ 樹
8	人人都是 DBA（VIII）SQL Server 頁存儲結構
9	人人都是 DBA（IX）服務器信息收集腳本匯編
10	人人都是 DBA（X）資源信息收集腳本匯編
11	人人都是 DBA（XI）I/O 信息收集腳本匯編
12	人人都是 DBA（XII）查詢信息收集腳本匯編
13	人人都是 DBA（XIII）索引信息收集腳本匯編
14	人人都是 DBA（XIV）存儲過程信息收集腳本匯編
15	人人都是 DBA（XV）鎖信息收集腳本匯編

本系列文章《人人都是 DBA》由 Dennis Gao 發表自博客園，未經作者本人同意禁止任何形式的轉載，任何自動或人為的爬蟲轉載行為均為耍流氓。