I think user_segments would do the job nicely. What's wrong with using segment_name along with partition_name? _____ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Dba DBA Sent: Tuesday, September 30, 2008 2:10 PM To: oracle-l@xxxxxxxxxxxxx Subject: database sizing estimates using partitioned indexe We partitions by day and by month depending on the table. All of our partitions have names of the form PART_YYYYMMDD or PART_YYYYMM I am trying to calculate sizing estimates/day and by month (so they can stay ahead of adding storage). since all my partitions have the same name, user_segments is not useful. for data I was using using_tab_partitions and taking blocks*blocksize to get the size/day. I see "leaf blocks" in user ind_partitions. Not sure if that is enough blocks to get a good estimate per day. Note that 1 partition is one day or 1 month. any suggestions ?