Re: SQL structure reorganisation

Question

HI Experts,
i am working on ECC 6.0 using win 2k3 64 bit with sql 2005 server as database.
the problem is, i have deleted to clients from my server to create some space for a new client copy but after deletion of that two client i didnt get the space acquired by those client. one of my colleague suggested that reorganization of sql structure can rectify this problem, but i dont know how to do that.
Please can anyone tell me which query is used for that or how can i recover the space which is still occupied by the client i have deleted.
thanks in advance
Akshit Sharma

Answer 1

Hello,
this statement is not true:
> But data compression is a totally different thing and also it is not recommended because it makes database works slow.
Database compression is one of the key features of SQL Server 2008 and has and will solve more problems than Data reorganization will ever do.
If you want to reorganize all the tables in your database, you can use this script:
dbcc dropcleanbuffers
dbcc freeproccache
go
DECLARE @tablename varchar(900)
DECLARE @schemaname varchar(900)
DECLARE @cmd VARCHAR (999)
DECLARE @i INT
DECLARE @max INT
SELECT @max= count (*) FROM sys.sysobjects
     WHERE type = 'U'
SET @i= 0
DECLARE tnames_cursor CURSOR FOR
     SELECT schema_name (schema_id),[name]
     FROM sys.objects
     WHERE type = 'U'
     ORDER BY schema_id DESC, [name] ASC
OPEN tnames_cursor
FETCH NEXT FROM tnames_cursor INTO @schemaname, @tablename
PRINT 'Starting ...'
PRINT '---------------------------------------------'
WHILE (@@fetch_status = 0)
BEGIN
     SET @i= @i + 1
     IF (@i % 100 = 0)
          PRINT convert (VARCHAR (20), getdate ()) + ' - Currently updating (' + convert (VARCHAR (6), @i) + '/' + convert (VARCHAR (6), @max) + ') : ' + @schemaname + '.' + @tablename
     SELECT      @cmd = 'ALTER INDEX ALL ON [' + @schemaname + '].[' + @tablename + '] REBUILD WITH (MAXDOP = 0, ONLINE = OFF )'
     EXEC (@cmd)
     FETCH NEXT FROM tnames_cursor INTO @schemaname, @tablename
END
PRINT '---------------------------------------------'
PRINT 'All tables have been processed..'
DEALLOCATE tnames_cursor
GO
When you run this script, the SAP System should be down, as it can cause blocking situations, as it uses Tablelocks to reorganize the tables. If you want to use the online option, replace ONLINE = OFF with ONLINE = ON. This will minimize the blocking impact of the script, as the tables then gets reorganized online. See SQL Server Books Online for more details.
Best regards
  Clas