Checking Statistics 
You can use the following tools to inspect the statistics relevant for a reorganization:
- Performance Monitor of the R/3 System (see online help of the Computing Center Management System)
sapdba -check
See
SAPDBA Command Mode.
sapdba -analyze
See
Command Option -analyze.
- SAPDBA option Reorganization
®
Check extents and fragmentation
See
Extent Check Functions.
- SAPDBA option Tablespace administration
See
Number of Data Files.
Please also read the notes in
Reorganization of Special Tablespaces.