create index cat_req_dt_ix on oe.cat_req(cat_req_dt)
 global partition by range(cat_req_dt)
 (partition spr_sum_2004
  values less than (to_date('20040901','YYYYMMDD'))
    tablespace idx_4,
 partition fal_win_2004
 values less than (maxvalue)
    tablespace idx_8);