To rename a rules file, in the “Rename to” box of the Rename Rules File dialog box, you enter any name that is valid within your operating system. For length limitations, see the Oracle Essbase Database Administrator's Guide.
To all rules file names, Essbase adds an extension of .rul.
alter object (MaxL) in the Oracle Essbase Technical Reference
renameobject (ESSCMD) in the Oracle Essbase Technical Reference