no space after delete?

Hi, thanks for your interest. I have a problem with free table space after delete on my first INFORMIX- project. I create many tables (also with indexes), then I store many, many data. Whenever 90 % table space consumed, I will remove oldest data. I remove with "delete from ... where ...;". The data was deleted, but no more space was free! The next test: I consumed all table space (see 0 free Chunks from tbstat -d) and I can no more data stored. Now delete _all_ datas on all tables - now space! I also remove indexes - without better result. When I remove one table self, in that moment the space is free. I use ESQL/C, but I have equal result with SQL-statements over isql command. dbexport/dbimport is not good idea - too many data. I must remove oldest data and then store new data. What can I do? my configuration: RS/6000 320 with AIX 3.2.5 INFORMIX Online 5.00 ESQL/C 5.00 Sorry for my english, when you can better answer in German - than do it. Heiko :) hlu@petnet.in-berlin.de +49 30 5425978