Thanks for your reponses : 1. Dareell : I do 'alter move ' 2 or 3 times and it works===> COOL !! 2. Ryan : my table is set with pctused 99 and pctfree 1 but as my ETL (PX+Dastage) is using parallel loaders (x4) with Direct Path I suppose that each nodes used new extents for its loading. So we waste space. 3. Dennis : is it a bests practises doing so ? (I mean using 2 type of tbs ?)