The WF_RUN function with the IDs and start date and end date parameters:
FUNCTION WF_RUN(P_PROJECT_ID IN NUMBER,
P_WORKFLOW_ID IN NUMBER,
P_NODE_IDS IN ODMR_OBJECT_IDS,
P_RUN_MODE IN VARCHAR2 DEFAULT 'RUN_NODE_ONLY',
P_MAX_NUM_THREADS IN NUMBER DEFAULT NULL,
P_START_DATE IN TIMESTAMP WITH TIME ZONE DEFAULT NULL,
P_REPEAT_INTERVAL IN VARCHAR2 DEFAULT NULL,
P_END_DATE IN TIMESTAMP WITH TIME ZONE DEFAULT NULL,
P_JOB_CLASS IN VARCHAR2 DEFAULT NULL)
RETURN VARCHAR2
Parent topic: WF_RUN