> Of course, *now* I managed to find the storage formula for NUMBER > ("Internal Numeric Format" heading): > > http://download.oracle.com/docs/cd/B14117_01/server.101/b10743/datatype.htm#i16209 Speaking of storage of number data type, Oracle's formula has been wrong for 10 years or longer, and was finally dropped in 11gR2 documentation. See http://yong321.freeshell.org/oranotes/NumberDataStorageLength.txt Yong Huang -- //www.freelists.org/webpage/oracle-l