Christian Ulrich II studied in Frankfurt (Oder) and at the Military Academy in Berlin.

Christian Ulrich II resided as a Paréage Lord at the country estate of Wilhelminenort, the former village of Bresewitz (near Bierutów), that had been renamed in honor of his stepmother, Princess Sophie Wilhelmine of East Frisia (1659-1698).

He converted to Catholicism on 26 January 1723, during a trip to Rome, and he pronounced the formula of abjuration from lutheranism, before Pope Innocent XIII.

His son was chosen by his childless older brother to succeed him as Duke of Oels.

Christian Ulrich II married on 13 July 1711 Philippine Charlotte (18 February 1691 - Oels, 17 June 1758), a daughter of Count Erdmann of Redern-Krappitz (1659-1712), with whom he had six children:[1]