Comment automatiser la collecte de données sur la croissance de la base de données SQL Server

Présentation

Souvent, il est nécessaire de contrôler la croissance de toutes les tables et fichiers de toutes les bases de données.

Dans cet article, nous allons explorer un exemple d'automatisation de la collecte de données sur la croissance des tables et des fichiers de base de données SQL Server.

Solution

1. Créer une vue sur la taille de toutes les tables pour chaque base de données

   USE [DATABASE_NAME]
   GO
   
   SET ANSI_NULLS ON
   GO
   
   SET QUOTED_IDENTIFIER ON
   GO
   
   
   CREATE view [inf].[vTableSize] as
   with pagesizeKB as (
   	SELECT low / 1024 as PageSizeKB
   	FROM master.dbo.spt_values
   	WHERE number = 1 AND type = 'E'
   )
   ,f_size as (
   	select p.[object_id], 
   		   sum([total_pages]) as TotalPageSize,
   		   sum([used_pages])  as UsedPageSize,
   		   sum([data_pages])  as DataPageSize
   	from sys.partitions p join sys.allocation_units a on p.partition_id = a.container_id
   	left join sys.internal_tables it on p.object_id = it.object_id
   	WHERE OBJECTPROPERTY(p.[object_id], N'IsUserTable') = 1
   	group by p.[object_id]
   )
   ,tbl as (
   	SELECT
   	  t.[schema_id],
   	  t.[object_id],
   	  i1.rowcnt as CountRows,
   	  (COALESCE(SUM(i1.reserved), 0) + COALESCE(SUM(i2.reserved), 0)) * (select top(1) PageSizeKB from pagesizeKB) as ReservedKB,
   	  (COALESCE(SUM(i1.dpages), 0) + COALESCE(SUM(i2.used), 0)) * (select top(1) PageSizeKB from pagesizeKB) as DataKB,
   	  ((COALESCE(SUM(i1.used), 0) + COALESCE(SUM(i2.used), 0))
   	    - (COALESCE(SUM(i1.dpages), 0) + COALESCE(SUM(i2.used), 0))) * (select top(1) PageSizeKB from pagesizeKB) as IndexSizeKB,
   	  ((COALESCE(SUM(i1.reserved), 0) + COALESCE(SUM(i2.reserved), 0))
   	    - (COALESCE(SUM(i1.used), 0) + COALESCE(SUM(i2.used), 0))) * (select top(1) PageSizeKB from pagesizeKB) as UnusedKB
   	FROM sys.tables as t
   	LEFT OUTER JOIN sysindexes as i1 ON i1.id = t.[object_id] AND i1.indid < 2
   	LEFT OUTER JOIN sysindexes as i2 ON i2.id = t.[object_id] AND i2.indid = 255
   	WHERE OBJECTPROPERTY(t.[object_id], N'IsUserTable') = 1
   	OR (OBJECTPROPERTY(t.[object_id], N'IsView') = 1 AND OBJECTPROPERTY(t.[object_id], N'IsIndexed') = 1)
   	GROUP BY t.[schema_id], t.[object_id], i1.rowcnt
   )
   SELECT
     @@Servername AS Server,
     DB_NAME() AS DBName,
     SCHEMA_NAME(t.[schema_id]) as SchemaName,
     OBJECT_NAME(t.[object_id]) as TableName,
     t.CountRows,
     t.ReservedKB,
     t.DataKB,
     t.IndexSizeKB,
     t.UnusedKB,
     f.TotalPageSize*(select top(1) PageSizeKB from pagesizeKB) as TotalPageSizeKB,
     f.UsedPageSize*(select top(1) PageSizeKB from pagesizeKB) as UsedPageSizeKB,
     f.DataPageSize*(select top(1) PageSizeKB from pagesizeKB) as DataPageSizeKB
   FROM f_size as f
   inner join tbl as t on t.[object_id]=f.[object_id]
   
   GO

2. Créez une base de données spécifique et déterminez une table pour stocker des informations sur la croissance de toutes les tables de base de données :

   USE [DATABASE_NAME]
   GO
   
   SET ANSI_NULLS ON
   GO
   
   SET QUOTED_IDENTIFIER ON
   GO
   
   SET ANSI_PADDING ON
   GO
   
   CREATE TABLE [srv].[TableStatistics](
   	[Row_GUID] [uniqueidentifier] NOT NULL CONSTRAINT [DF_TableStatistics_Row_GUID]  DEFAULT (newid()),
   	[ServerName] [nvarchar](255) NOT NULL,
   	[DBName] [nvarchar](255) NOT NULL,
   	[SchemaName] [nvarchar](255) NOT NULL,
   	[TableName] [nvarchar](255) NOT NULL,
   	[CountRows] [bigint] NOT NULL,
   	[DataKB] [int] NOT NULL,
   	[IndexSizeKB] [int] NOT NULL,
   	[UnusedKB] [int] NOT NULL,
   	[ReservedKB] [int] NOT NULL,
   	[InsertUTCDate] [datetime] NOT NULL CONSTRAINT [DF_TableStatistics_InsertUTCDate]  DEFAULT (getutcdate()),
   	[Date]  AS (CONVERT([date],[InsertUTCDate])) PERSISTED,
   	[CountRowsBack] [bigint] NULL,
   	[CountRowsNext] [bigint] NULL,
   	[DataKBBack] [int] NULL,
   	[DataKBNext] [int] NULL,
   	[IndexSizeKBBack] [int] NULL,
   	[IndexSizeKBNext] [int] NULL,
   	[UnusedKBBack] [int] NULL,
   	[UnusedKBNext] [int] NULL,
   	[ReservedKBBack] [int] NULL,
   	[ReservedKBNext] [int] NULL,
   	[AvgCountRows]  AS ((([CountRowsBack]+[CountRows])+[CountRowsNext])/(3)) PERSISTED,
   	[AvgDataKB]  AS ((([DataKBBack]+[DataKB])+[DataKBNext])/(3)) PERSISTED,
   	[AvgIndexSizeKB]  AS ((([IndexSizeKBBack]+[IndexSizeKB])+[IndexSizeKBNext])/(3)) PERSISTED,
   	[AvgUnusedKB]  AS ((([UnusedKBBack]+[UnusedKB])+[UnusedKBNext])/(3)) PERSISTED,
   	[AvgReservedKB]  AS ((([ReservedKBBack]+[ReservedKB])+[ReservedKBNext])/(3)) PERSISTED,
   	[DiffCountRows]  AS (([CountRowsNext]+[CountRowsBack])-(2)*[CountRows]) PERSISTED,
   	[DiffDataKB]  AS (([DataKBNext]+[DataKBBack])-(2)*[DataKB]) PERSISTED,
   	[DiffIndexSizeKB]  AS (([IndexSizeKBNext]+[IndexSizeKBBack])-(2)*[IndexSizeKB]) PERSISTED,
   	[DiffUnusedKB]  AS (([UnusedKBNext]+[UnusedKBBack])-(2)*[UnusedKB]) PERSISTED,
   	[DiffReservedKB]  AS (([ReservedKBNext]+[ReservedKBBack])-(2)*[ReservedKB]) PERSISTED,
   	[TotalPageSizeKB] [int] NULL,
   	[TotalPageSizeKBBack] [int] NULL,
   	[TotalPageSizeKBNext] [int] NULL,
   	[UsedPageSizeKB] [int] NULL,
   	[UsedPageSizeKBBack] [int] NULL,
   	[UsedPageSizeKBNext] [int] NULL,
   	[DataPageSizeKB] [int] NULL,
   	[DataPageSizeKBBack] [int] NULL,
   	[DataPageSizeKBNext] [int] NULL,
   	[AvgDataPageSizeKB]  AS ((([DataPageSizeKBBack]+[DataPageSizeKB])+[DataPageSizeKBNext])/(3)) PERSISTED,
   	[AvgUsedPageSizeKB]  AS ((([UsedPageSizeKBBack]+[UsedPageSizeKB])+[UsedPageSizeKBNext])/(3)) PERSISTED,
   	[AvgTotalPageSizeKB]  AS ((([TotalPageSizeKBBack]+[TotalPageSizeKB])+[TotalPageSizeKBNext])/(3)) PERSISTED,
   	[DiffDataPageSizeKB]  AS (([DataPageSizeKBNext]+[DataPageSizeKBBack])-(2)*[DataPageSizeKB]) PERSISTED,--shows as the casting is changed
   	[DiffUsedPageSizeKB]  AS (([UsedPageSizeKBNext]+[UsedPageSizeKBBack])-(2)*[UsedPageSizeKB]) PERSISTED,--shows as the casting is changed
   	[DiffTotalPageSizeKB]  AS (([TotalPageSizeKBNext]+[TotalPageSizeKBBack])-(2)*[TotalPageSizeKB]) PERSISTED,--shows as the casting is changed
    CONSTRAINT [PK_TableStatistics] PRIMARY KEY CLUSTERED 
   (
   	[Row_GUID] ASC
   )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
   ) ON [PRIMARY]
   
   GO
   
   SET ANSI_PADDING ON
   GO

   TotalPageSizeKB indique la taille du tableau.

   Le total de TotalPageSizeKB de toutes les tables de la base de données + la taille des tables système =la taille des données de la base de données.

3. Déterminez la procédure de collecte des informations :

   USE [DATABASE_NAME]
   GO
   
   SET ANSI_NULLS ON
   GO
   
   SET QUOTED_IDENTIFIER ON
   GO
   
   CREATE PROCEDURE [srv].[InsertTableStatistics]
   AS
   BEGIN
   	SET NOCOUNT ON;
   	SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
   
   	declare @dt date=CAST(GetUTCDate() as date);
       declare @dbs nvarchar(255);
   	declare @sql nvarchar(max);
   
   	select [name]
   	into #dbs
   	from sys.databases;
   
   	while(exists(select top(1) 1 from #dbs))
   	begin
   		select top(1)
   		@dbs=[name]
   		from #dbs;
   
   		set @sql=
   		N'INSERT INTO [srv].[TableStatistics]
   	         ([ServerName]
   			   ,[DBName]
   	         ,[SchemaName]
   	         ,[TableName]
   	         ,[CountRows]
   	         ,[DataKB]
   	         ,[IndexSizeKB]
   	         ,[UnusedKB]
   	         ,[ReservedKB]
   			 ,[TotalPageSizeKB]
   			 ,[UsedPageSizeKB]
   			 ,[DataPageSizeKB])
   	   SELECT [Server]
   		  ,[DBName]
   	         ,[SchemaName]
   	         ,[TableName]
   	         ,[CountRows]
   	         ,[DataKB]
   	         ,[IndexSizeKB]
   	         ,[UnusedKB]
   	         ,[ReservedKB]
   			 ,[TotalPageSizeKB]
   			 ,[UsedPageSizeKB]
   			 ,[DataPageSizeKB]
   		FROM ['[email protected]+'].[inf].[vTableSize];';
   
   		exec sp_executesql @sql;
   
   		delete from #dbs
   		where [name][email protected];
   	end
   
   	drop table #dbs;
   
   	declare @dt_back date=CAST(DateAdd(day,-1,@dt) as date);
   
   	;with tbl1 as (
   		select [Date], 
   			   [CountRows],
   			   [DataKB],
   			   [IndexSizeKB],
   			   [UnusedKB],
   			   [ReservedKB],
   			   [ServerName], 
   			   [DBName], 
   			   [SchemaName], 
   			   [TableName],
   			   [TotalPageSizeKB],
   			   [UsedPageSizeKB],
   			   [DataPageSizeKB]
   		from [srv].[TableStatistics]
   		where [Date][email protected]_back
   	)
   	, tbl2 as (
   		select [Date], 
   			   [CountRows], 
   			   [CountRowsBack],
   			   [DataKBBack],
   			   [IndexSizeKBBack],
   			   [UnusedKBBack],
   			   [ReservedKBBack],
   			   [ServerName], 
   			   [DBName], 
   			   [SchemaName], 
   			   [TableName],
   			   [TotalPageSizeKBBack],
   			   [UsedPageSizeKBBack],
   			   [DataPageSizeKBBack]
   		from [srv].[TableStatistics]
   		where [Date][email protected]
   	)
   	update t2
   	set t2.[CountRowsBack]		=t1.[CountRows],
   		t2.[DataKBBack]			=t1.[DataKB],
   		t2.[IndexSizeKBBack]	=t1.[IndexSizeKB],
   		t2.[UnusedKBBack]		=t1.[UnusedKB],
   		t2.[ReservedKBBack]		=t1.[ReservedKB],
   		t2.[TotalPageSizeKBBack]=t1.[TotalPageSizeKB],
   		t2.[UsedPageSizeKBBack]	=t1.[UsedPageSizeKB],
   		t2.[DataPageSizeKBBack]	=t1.[DataPageSizeKB]
   	from tbl1 as t1
   	inner join tbl2 as t2 on t1.[Date]=DateAdd(day,-1,t2.[Date])
   	and t1.[ServerName]=t2.[ServerName]
   	and t1.[DBName]=t2.[DBName]
   	and t1.[SchemaName]=t2.[SchemaName]
   	and t1.[TableName]=t2.[TableName];
   
   	;with tbl1 as (
   		select [Date], 
   			   [CountRows], 
   			   [CountRowsNext],
   			   [DataKBNext],
   			   [IndexSizeKBNext],
   			   [UnusedKBNext],
   			   [ReservedKBNext],
   			   [ServerName], 
   			   [DBName], 
   			   [SchemaName], 
   			   [TableName],
   			   [TotalPageSizeKBNext],
   			   [UsedPageSizeKBNext],
   			   [DataPageSizeKBNext]
   		from [srv].[TableStatistics]
   		where [Date][email protected]_back
   	)
   	, tbl2 as (
   		select [Date], 
   			   [CountRows],
   			   [DataKB],
   			   [IndexSizeKB],
   			   [UnusedKB],
   			   [ReservedKB],
   			   [ServerName], 
   			   [DBName], 
   			   [SchemaName], 
   			   [TableName],
   			   [TotalPageSizeKB],
   			   [UsedPageSizeKB],
   			   [DataPageSizeKB]
   		from [srv].[TableStatistics]
   		where [Date][email protected]
   	)
   	update t1
   	set t1.[CountRowsNext]		=t2.[CountRows],
   		t1.[DataKBNext]			=t2.[DataKB],
   		t1.[IndexSizeKBNext]	=t2.[IndexSizeKB],
   		t1.[UnusedKBNext]		=t2.[UnusedKB],
   		t1.[ReservedKBNext]		=t2.[ReservedKB],
   		t1.[TotalPageSizeKBNext]=t2.[TotalPageSizeKB],
   		t1.[UsedPageSizeKBNext]	=t2.[UsedPageSizeKB],
   		t1.[DataPageSizeKBNext]	=t2.[DataPageSizeKB]
   	from tbl1 as t1
   	inner join tbl2 as t2 on t1.[Date]=DateAdd(day,-1,t2.[Date])
   	and t1.[ServerName]=t2.[ServerName]
   	and t1.[DBName]=t2.[DBName]
   	and t1.[SchemaName]=t2.[SchemaName]
   	and t1.[TableName]=t2.[TableName];
   END
   GO

   Cette solution peut être modifiée pour collecter des données sur les tailles des tables de toutes les bases de données de toutes les instances requises de MS SQL Server.

4. Définir la vue par les informations collectées :

   USE [DATABASE_NAME]
   GO
   
   SET ANSI_NULLS ON
   GO
   
   SET QUOTED_IDENTIFIER ON
   GO
   
   create view [srv].[vTableStatisticsShort] as 
   with d as (select DateAdd(day,-1,max([Date])) as [Date] from [srv].[TableStatistics])
   SELECT t.[ServerName]
         ,t.[DBName]
         ,t.[SchemaName]
         ,t.[TableName]
         ,t.[CountRows]
         ,t.[DataKB]
         ,t.[IndexSizeKB]
         ,t.[UnusedKB]
         ,t.[ReservedKB]
         ,t.[InsertUTCDate]
         ,t.[Date]
         ,t.[CountRowsBack]
         ,t.[CountRowsNext]
         ,t.[DataKBBack]
         ,t.[DataKBNext]
         ,t.[IndexSizeKBBack]
         ,t.[IndexSizeKBNext]
         ,t.[UnusedKBBack]
         ,t.[UnusedKBNext]
         ,t.[ReservedKBBack]
         ,t.[ReservedKBNext]
         ,t.[AvgCountRows]
         ,t.[AvgDataKB]
         ,t.[AvgIndexSizeKB]
         ,t.[AvgUnusedKB]
         ,t.[AvgReservedKB]
         ,t.[DiffCountRows]
         ,t.[DiffDataKB]
         ,t.[DiffIndexSizeKB]
         ,t.[DiffUnusedKB]
         ,t.[DiffReservedKB]
         ,t.[TotalPageSizeKB]
         ,t.[TotalPageSizeKBBack]
         ,t.[TotalPageSizeKBNext]
         ,t.[UsedPageSizeKB]
         ,t.[UsedPageSizeKBBack]
         ,t.[UsedPageSizeKBNext]
         ,t.[DataPageSizeKB]
         ,t.[DataPageSizeKBBack]
         ,t.[DataPageSizeKBNext]
         ,t.[AvgDataPageSizeKB]
         ,t.[AvgUsedPageSizeKB]
         ,t.[AvgTotalPageSizeKB]
         ,t.[DiffDataPageSizeKB]
         ,t.[DiffUsedPageSizeKB]
         ,t.[DiffTotalPageSizeKB]
     FROM d
     inner join [SRV].[srv].[TableStatistics] as t on d.[Date]=t.[Date]
     where t.[CountRowsBack] is not null
   	and	t.[CountRowsNext] is not null
   GO

   Ici, je voudrais attirer votre attention sur Diff. S'il est supérieur à 0, cela signifie que la table grandit plus vite chaque jour.

   La collecte est censée être effectuée une fois toutes les 24 heures.

   De la même manière, nous pouvons automatiser la collecte de la croissance des fichiers de toutes les bases de données en utilisant la vue suivante :

   USE [DATABASE_NAME]
   GO
   
   SET ANSI_NULLS ON
   GO
   
   SET QUOTED_IDENTIFIER ON
   GO
   
   select	t2.[DB_Name] as [DBName]
   			,t1.FileId 
   			,t1.NumberReads
   			,t1.BytesRead
   			,t1.IoStallReadMS
   			,t1.NumberWrites
   			,t1.BytesWritten
   			,t1.IoStallWriteMS 
   			,t1.IoStallMS
   			,t1.BytesOnDisk
   			,t1.[TimeStamp]
   			,t1.FileHandle
   			,t2.[Type_desc]
   			,t2.[FileName]
   			,t2.[Drive]
   			,t2.[Physical_Name]
   			,t2.[Ext]
   			,t2.[CountPage]
   			,t2.[SizeMb]
   			,t2.[SizeGb]
   			,t2.[Growth]
   			,t2.[GrowthMb]
   			,t2.[GrowthGb]
   			,t2.[GrowthPercent]
   			,t2.[is_percent_growth]
   			,t2.[database_id]
   			,t2.[State]
   			,t2.[StateDesc]
   			,t2.[IsMediaReadOnly]
   			,t2.[IsReadOnly]
   			,t2.[IsSpace]
   			,t2.[IsNameReserved]
   			,t2.[CreateLsn]
   			,t2.[DropLsn]
   			,t2.[ReadOnlyLsn]
   			,t2.[ReadWriteLsn]
   			,t2.[DifferentialBaseLsn]
   			,t2.[DifferentialBaseGuid]
   			,t2.[DifferentialBaseTime]
   			,t2.[RedoStartLsn]
   			,t2.[RedoStartForkGuid]
   			,t2.[RedoTargetLsn]
   			,t2.[RedoTargetForkGuid]
   			,t2.[BackupLsn]
   from fn_virtualfilestats(NULL, NULL) as t1
   inner join [inf].[ServerDBFileInfo] as t2 on t1.[DbId]=t2.[database_id] and t1.[FileId]=t2.[File_Id]
   GO

Résultat

Dans cet article, nous avons exploré l'exemple de l'automatisation de la collecte de données sur la taille et la croissance de toutes les tables et fichiers SQL Server de toutes les bases de données. Il nous offre un contrôle complet sur la modification de la taille des fichiers de base de données et de ses tables, ainsi que la prise de mesures opportunes pour réduire la table ou le fichier, pour augmenter le périphérique de stockage de données ou pour diviser les informations en plusieurs périphériques de stockage de données.