THE American computer giant Oracle is to sell its leasehold interest in a four-storey office building at Maretimo Court, Blackrock, Co Dublin, following its decision to relocate its European development and technical staff to a new block at East Point in the Dublin docklands. Colliers Jackson Stops is seeking a premium of over £200,000 for the detached 14,500 sq ft building which is rented at £210,000 under a 35 year lease from June, 1990. The rent equates to £13 per sq ft and there are 30 car-parking spaces. Oracle is now leasing three buildings in East Point.