In 1791, Oey was further elevated to the post and title of Kapitein der Chinezen in succession to the outgoing Kapitein Ong Tjoe Seng. Oey's appointment was approved by Willem Arnold Alting, Governor-General of the Dutch East Indies. To mark his installation in 1791, Oey commissioned the oldest of the eight surviving commemorative plaques of the Kong Koan, or Chinese Council, of Batavia, now conserved at Leiden University. In the words of historian Leonard Blussé: 'He wished to show the full pedigree of the captains who had held office before him'. The text begins by extolling Kapitein Souw Beng Kong, the first in the 'pedigree', then highlights the re-establishment of authority following the Chinese Massacre of 1740 and the ongoing Java War of 1741 to 1743 under Kapitein Lim Beng Ko, appointed in 1743, and the Kong Koan, newly reconstituted and recognised as an official government body in 1742. Kapitein Oey Bian Kong's plaque then declares: 'following the examples set by his illustrious predecessors, he will devote himself to the well-being of his people.'