We have a very big table that keeps millions of records and this table has 4 segments allocated to that table. Recently we were getting a critical error when ever we logon to the client saying that 3 segments were more than 95% filled up. So we deleted lot of rows from this table to solve the space issue. Even though the percentage is not increasing any more, we are still getting this critical error message. Informis is using the deleted space but database itself is not able to see this space. How can I defragment the segments in order for the database to see this space and get rid of the critical error message ??