Hi all. Im using a select to check space in database: select sysdate, total_space,total_space-nvl( free_space,0) used_space, nvl(free_space,0) free_space,((total_space - nvl(free_space,0)) / total_space)*100 pct_inuse, num_db_files from ( select sum(bytes)/1024/1024 free_space from sys.DBA_FREE_SPACE ) FREE, ( select sum(bytes)/1024/1024 total_space, count(*) num_db_files from sys.DBA_DATA_FILES) FULL; With a result like: Timestamp DBSize (Meg) Used (Meg) Free (Meg) % Used Num DB Files 1 07 Dic 2009 11:28 129782 98300 31482 75.74 41 2 08 Dic 2009 11:28 129782 98255 31527 75.71 41 3 09 Dic 2009 12:00 129782 98639 31143 76.00 41 Between Dic 7 and 8, the used space lows. I havent done, any shrink, or coalesce, or purge bin, nothing. Its posible that the difference in used was by a delete, and that the locally tablespace, coalesce the free space? Thanks