It is part of the basic license - even SE - and is (unfortunately) a badly understood and rarely used feature. On Fri, 12 Apr 2013 14:16:43 -0400, Jeffrey Beckstrom <JBECKSTROM@xxxxxxxxx> wrote: Is Index Compression part of the basic database license or is it part of the Advanced Compression Option? > -- Wolfgang Breitling Centrex Consulting Corporation -- //www.freelists.org/webpage/oracle-l