Oracle Corp and Hewlett-Packard Co are to expand their relationship with agreement in principle that Hewlett will put Oracle products among the top of its Preferred Solution Provider programme and Oracle will use HP 9000 systems as reference development machines. Hewlett will consider an option to take orders for Oracle software, and offering its customers Oracle product support. Oracle has established an HP Products Division for the HP 3000 systems and will use Hewlett workstations for its development work on tools for OSF/Motif, and the two will will train their sales forces for joint selling of Oracle products on HP 3000s and HP 9000s.