initial commit

OCTPDBA-379 - cleanup hciChangeTracking/MaintainHCIChangeTrackingHistory.sql

@@ -0,0 +1,72 @@
+IF OBJECT_ID('[dbo].[MaintainHCIChangeTrackingHistory]') IS NOT NULL 
+BEGIN 
+	DROP PROCEDURE [dbo].[MaintainHCIChangeTrackingHistory];
+END
+GO
+SET ANSI_NULLS ON 
+GO
+SET QUOTED_IDENTIFIER ON 
+GO
+/*============================================================================= 
+
+Description
+----------------------
+	OCTP-2459
+
+	Cleans history data in HCIChangeTracking.
+	Deletes all records older than 2 years in the following tables:
+		* [OlpDirectoryChangeLog]
+		* [OlpfactChangeLog]
+		* [OlpfactValidatorChangeLog]
+
+Where
+----------------------
+	On all TriaFact instances
+
+Dependencies
+----------------------
+	Called by job [W030100 - Cleanup HCIChangeTracking]
+
+Creation: 
+	03.11.2022 / TSC
+
+Modifications:
+
+=============================================================================*/ 
+CREATE PROCEDURE dbo.MaintainHCIChangeTrackingHistory
+AS
+BEGIN 
+	SET NOCOUNT ON;
+
+	DECLARE
+		@deleted    INT
+	   ,@batch_size INT  = 100000
+	   ,@today      DATE = DATEADD(DAY, DATEDIFF(DAY, 0, CURRENT_TIMESTAMP), 0);
+
+	SET @deleted = 1;
+	WHILE @deleted > 0 BEGIN
+		DELETE TOP (@batch_size) cl
+		FROM dbo.[OlpDirectoryChangeLog] cl
+		WHERE cl.CreationDate < DATEADD(YEAR, -2, @today);
+
+		SET @deleted = @@ROWCOUNT;
+	END
+
+	SET @deleted = 1;
+	WHILE @deleted > 0 BEGIN
+		DELETE TOP (@batch_size) cl
+		FROM dbo.[OlpfactChangeLog] cl
+		WHERE cl.CreationDate < DATEADD(YEAR, -2, @today);
+
+		SET @deleted = @@ROWCOUNT;
+	END
+
+	SET @deleted = 1;
+	WHILE @deleted > 0 BEGIN
+		DELETE TOP (@batch_size) cl
+		FROM dbo.[OlpfactValidatorChangeLog] cl
+		WHERE cl.CreationDate < DATEADD(YEAR, -2, @today);
+
+		SET @deleted = @@ROWCOUNT;
+	END
+END