Failover or Restart Results in Reseed of Identity – FIX

Simple run the script and then every time SQL is restarted all your Identity columns will be reset to the latest available seed.

This script is a fix for the issue logged here. Hope it helps others like it’s helping me.

 

USE master; 
GO
CREATE PROCEDURE sp_FixSeeds2012
AS
BEGIN

	--foreach database
	DECLARE @DatabaseName varchar(255)

	DECLARE DatabasesCursor CURSOR READ_ONLY
	FOR
		SELECT name
		FROM sys.databases
		where name not in ('master','tempdb','model','msdb') and 
        sys.databases.state_desc = 'online'

	OPEN DatabasesCursor

	FETCH NEXT FROM DatabasesCursor
	INTO @DatabaseName

	WHILE @@FETCH_STATUS = 0
	BEGIN

		EXEC ('USE '+@DatabaseName + '

		--foreach identity column
		DECLARE @tableName varchar(255)
		DECLARE @columnName varchar(255)
		DECLARE @schemaName varchar(255)

		DECLARE IdentityColumnCursor CURSOR READ_ONLY
		FOR

			select TABLE_NAME , COLUMN_NAME, TABLE_SCHEMA 
			from INFORMATION_SCHEMA.COLUMNS 
			where COLUMNPROPERTY(object_id(TABLE_NAME), COLUMN_NAME,
                                 ''IsIdentity'') = 1 

		OPEN IdentityColumnCursor

		FETCH NEXT FROM IdentityColumnCursor
		INTO @tableName, @columnName, @schemaName

		WHILE @@FETCH_STATUS = 0
		BEGIN

			print ''['+@DatabaseName+'].[''+@tableName+''].[''+
                            @schemaName+''].[''+@columnName+'']'' 
			EXEC (''declare @MAX int = 0
					select @MAX = max(''+@columnName+'') 
                    from ['+@DatabaseName+'].[''+@schemaName+''].[''+@tableName+'']
					if (@MAX IS NULL)
					BEGIN
						SET @MAX = 0
					END
					DBCC CHECKIDENT(['+@DatabaseName+'.''+
                                    @schemaName+''.''+@tableName+''],RESEED,@MAX)'')

			FETCH NEXT FROM IdentityColumnCursor
			INTO @tableName, @columnName, @schemaName

		END

		CLOSE IdentityColumnCursor
		DEALLOCATE IdentityColumnCursor')

		FETCH NEXT FROM DatabasesCursor
		INTO @DatabaseName

	END

	CLOSE DatabasesCursor
	DEALLOCATE DatabasesCursor
END
GO

EXEC sp_configure 'show advanced options', 1 ;
GO
RECONFIGURE
GO
EXEC sp_configure 'scan for startup procs', 1 ;
GO
RECONFIGURE
GO

EXEC sp_procoption @ProcName = 'sp_FixSeeds2012' 
    , @OptionName = 'startup' 
    , @OptionValue = 'true' 
GO

 

Hope this helps someone that requires this new feature to be “turned off”.

Links :

• http://connect.microsoft.com/SQLServer/feedback/details/739013/alwayson-failover-results-in-reseed-of-identity
• http://www.sqlservercentral.com/scripts/MS+SQL+2012/93043/

• #MicrosoftConnect
• Fix
• MS SQL 2012