PRDD_GET_DB_DEADLOCKS: First Version

current/[PRDD_GET_DB_DEADLOCKS]/[PRDD_GET_DB_DEADLOCKS].sql

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+USE [DD_SYS]
+GO
+
+SET ANSI_NULLS ON
+GO
+SET QUOTED_IDENTIFIER ON
+GO
+
+-- [PRDD_GET_DB_DEADLOCKS]
+-- =================================================================
+-- Gets db deadlock victims
+-- Minimum requirement: MS SQL Server 2016
+-- 
+-- Returns: table
+-- =================================================================
+-- Copyright (c) 2025 by Digital Data GmbH
+--
+-- Digital Data GmbH • Ludwig-Rinn-Strasse 16 • D-35452 Heuchelheim
+-- Tel.: 0641/202360 • E-Mail: info-flow@digitaldata.works
+-- =================================================================
+-- Creation Date / Author:    26.03.2025 / MK
+-- Version Date / Editor:     26.03.2025 / MK
+-- Version Number:            1.0.0.0
+-- =================================================================
+-- History:
+-- 26.03.2025 / MK - First Version
+
+CREATE OR ALTER PROCEDURE [dbo].[PRDD_GET_DB_DEADLOCKS](
+	pKILL_DEADLOCK_SESSIONS		BIT 	= NULL
+)
+AS
+BEGIN
+
+	SET NOCOUNT ON;
+	
+	-- declare new vars because of parameter sniffing
+    DECLARE @KILL_DEADLOCK_SESSIONS 	BIT 			= ISNULL(@pKILL_DEADLOCK_SESSIONS,0);
+
+	DECLARE @DEADLOCK_SESSIONS	TABLE  ([GUID]					[INT] IDENTITY(1,1) NOT NULL,
+										[SessionID]				[INT])				NOT NULL,
+										[blocking_session_id]	[INT]				NOT NULL,
+										[database_id]			[INT]				NOT NULL,
+										[blocking_statement]	[NVARCHAR](MAX)		NULL,
+										[blocked_statement]		[NVARCHAR](MAX)		NULL);
+
+	-- declare runtime vars
+    DECLARE @MyProcedureName			NVARCHAR(128) 	= OBJECT_NAME(@@PROCID);
+	DECLARE	@GUID						BIGINT,
+			@SessionID					INT,
+			@blocking_session_id		INT,
+			@database_id				INT,
+			@blocking_statement			NVARCHAR(MAX),
+			@blocked_statement			NVARCHAR(MAX),
+			@return_status				NVARCHAR(50)	= 0,
+			@return_status_text			NVARCHAR(MAX)	= 'START ' + @MyProcedureName + ' @ ' + CONVERT(varchar(50),GETDATE(),120);
+
+	PRINT '==============================='
+	PRINT 'PROCEDURE  - ' + @return_status_text;
+	PRINT 'PARAMETER01 - @KILL_DEADLOCK_SESSIONS: ' + CONVERT(VARCHAR(1),@KILL_DEADLOCK_SESSIONS);
+
+	INSERT INTO @DEADLOCK_SESSIONS([SessionID],[blocking_session_id],[database_id],[blocking_statement],[blocked_statement])
+	WITH XMLNAMESPACES ('http://schemas.microsoft.com/sqlserver/2004/07/showplan' AS sp)
+	SELECT
+		[requests].[session_id], 
+		[requests].[blocking_session_id], 
+		[requests].[database_id], 
+		[sql_text1].[text] 			AS blocking_statement, 
+		[sql_text2].[text] 			AS blocked_statement
+	FROM [master].[sys].[dm_exec_requests] as [requests]
+	CROSS APPLY [master].[sys].[dm_exec_sql_text]([requests].[sql_handle]) [sql_text1]
+	JOIN [master].[sys].[dm_exec_connections] as [connections] ON [requests].[blocking_session_id] = [connections].[session_id]
+	CROSS APPLY [master].[sys].[dm_exec_sql_text]([connections].[most_recent_sql_handle]) [sql_text2]
+	ORDER BY [requests].[database_id] ASC;
+
+	SELECT * FROM @DEADLOCK_SESSIONS ORDER BY [SessionID];
+	
+	SELECT	
+		[database_id], 
+		CONVERT(NVARCHAR(5),  [session_id]) as 'SessionID', 
+		CONVERT(NVARCHAR(50), [login_name]) as 'LoginName', 
+		CONVERT(NVARCHAR(50), [host_name])  as 'HostName'
+	FROM  [master].[sys].[dm_exec_sessions] (NOLOCK)
+	WHERE [is_user_process] = 1 
+	  AND [database_id] IN (SELECT DISTINCT [SessionID] FROM @DEADLOCK_SESSIONS ORDER BY [SessionID]);
+	
+		--==========================================-- Create the main loop (cursor) --============================================--
+	IF (SELECT COUNT(*) FROM @DEADLOCK_SESSIONS > 0) AND (@KILL_DEADLOCK_SESSIONS = 1) BEGIN
+
+		DECLARE CURSOR_KILL_SESSIONS CURSOR STATIC LOCAL FOR  
+			SELECT [SessionID] FROM @DEADLOCK_SESSIONS;
+ 
+		OPEN CURSOR_KILL_SESSIONS   
+		FETCH NEXT FROM CURSOR_KILL_SESSIONS INTO @SessionID   
+		WHILE @@FETCH_STATUS = 0  BEGIN   
+			BEGIN
+
+				PRINT ' ';
+				PRINT '-------------------------------';
+				PRINT 'Now processing: ' + CONVERT(varchar(100),@SessionID);
+	
+				KILL @SessionID
+				-----------------------------------------------------------------------------------------------------------------------------
+
+			END;
+
+			FETCH NEXT FROM CURSOR_KILL_SESSIONS INTO @SessionID;
+
+		END;
+
+		CLOSE CURSOR_KILL_SESSIONS;
+		DEALLOCATE CURSOR_KILL_SESSIONS;
+
+	END; ELSE BEGIN
+		PRINT '';
+		PRINT 'There are no deadlocks, or deadlock kill is disabled!';
+	END;