At what point do we decide that it's time to start rebuilding the tables indexes? I have max_extents set to UNLIMITED on both tables and indexes. Some of the indexes have grown to more than 100 extents but I don't see any visible performance degradation. But I am not sure when should I start thinking about rebuilding my indexes or do an import / export on tables to reset extents. Any help is greatly appreciated. Thx. Sathya