Oracle Audio Technologies ORACLE9I B10508-01 - Manual (Page 33)

Silent Mode Installation
Oracle9i Installation Planning 1-17
using the –responseFile argument instead of interactive GUI input and
output. If the -responseFile flag is given, then the installation is assumed to
be a silent mode type.
A silent installation can also be performed in BATCH mode, as long as the process
has established an X connection via the SET DISPLAY command.
Note: Because the design of OUI causes GUI classes to be loaded
(but not displayed), a silent installation still requires an
X connection.