Oliba promoted the movement of Peace and Truce of God (Pau i treva), towards 1022 and in 1027 the agreement of this treaty with other bishops and noblemen took place in Toulouges (Roussillon) and was said that all, noblemen, knights, farmers and monks, agreed to make, days in which nobody could quarrel with anybody and in which the fugitives could take refuge in churches and places holy, sure of being protected and respected, some days every year, be days of Peace.
It became a convention among the seigneurs of Roussillon and Catalonia and was first proclaimed in 1027 at the Council of Toulouges – a town of Roussillon – which was presided over by Oliba, bishop of Vic, the first notable patron of the movement.