看看这句sql有什么问题?

Question

 create unique index "ddweb"."tws_message_pk" on "ddweb"."tws_message" ("id") 
      pctfree 10 initrans 2 maxtrans 255 compute statistics 
      storage(initial 65536 next 1048576 minextents 1 maxextents 2147483645
      pctincrease 0 freelists 1 freelist groups 1 buffer_pool default flash_cache default cell_flash_cache default)
      tablespace "web" ;