Performance benefits from database export import

Question

Hi guru,
I have SAP R3 47.X110 WIN/SQL2005.
I want to improve performance by a sort of database reorganization.
I read this note  Note 159316 - Reorganizing tables on SQL Server SQL 2000/2005
but , there the method descrived is not much quick to do.
The question is : there is lot performance's benefits from make an export of my instance then re-import , according system copy procedure?
Or there is another quick way to reorganize database?
Thank you very much for answer.
Antonio.

Answer 1

You want to do an export/import or a reorganization to get more performance. The question is: does it make sense? The given Microsoft article and the mentioned notes describe pretty well, in which cases it makes sense and in which not.
I wouldn´t start with the last step (reorganization) but I would more try to find out, where the real problems are. Checking the I/O system throughput using performance monitor (perfmon.exe) on Windows, checking long running statements using ST05 and finding out if you have a real index fragmentation using the given DBCC procedures.
If you come to the conclusion then, that a reorganization makes sense, then I would do it.
And as stated in the SAP note, if it would become faster after such a task, the underlying I/O subsystem is not fast enough to serve all the requests.
There´s no general statement as "if you do reorganization using method A or method B it will be faster" because the reasons for a slow performance can vary.
Markus