A data replication manager can create new replication tasks. He or she may submit a new task for immediate execution (i.e., the replication task's state is set to WAITING and can immediately be assigned to a replication process) or have it executed automatically at a later predefined time (i.e. the replication task's state is set to PENDING).
This job determines all replication tasks of the system with state PENDING and updates the state to WAITING if current time reaches or exceeds the replication tasks' predefined start time. This is necessary because only tasks with state WAITING can be assigned to replication processes.