Error: You do not have sufficient privileges to write to the specified path. in component Database Configuration Assistant 9.2.0.1.0
.Installation cannot continue for this component.

Export ORACLE_BASE=

A valid directory with privileges matching the user and group that is installing the software.
As decribed in the Installation Guide.

eg.
mkdir /opt/oracle
chown oracle oracle
chgrp dba oracle
export ORACLE_BASE=/opt/oracle

Set environment:
ORACLE_HOME=/opt/oracle/product/9.2.0.4
PATH=$PATH:$ORACLE_HOME/bin