Hello,
We currently run a nightly report that gives us some information about our customers databases. Some of the info is the total amount of space being used by the database. For this number I query on the sys.dba_data_files. We also try to see what tables have a large number of rows. For this I query num_rows from dba_tables. We started to do a large number of deletes from our database. The problem is were not seeing the amount of space being used decreasing. Is there any thing that we need to do to reclaim that space?