The Oracle 8.0 documentation had an Appendix A to the "Oracle Server Administrator's Guide" on "Space Estimations for Schema Objects". It gave formulas for approximating the amount of disk space that would be taken up by tables and indexes, taking into account block size, init trans, pct free, etc. The appendix seems to have vanished in the 9i documentation -- at least I can't find it. Does anyone know if/where this information still exists, either in the Oracle documentation set or some other documentation? Thanks, Leslie Leslie Tierstein Senior Consultant Vision Chain, Inc. The first software to power the demand data network phone: 202-261-3549 ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------