Job set is same like Request set in Oracle apps. Like in Oracle apps , We combine multiple concurrent Programs in a Request set in the same way , We Combine Multiple ESS jobs in a Fusion Job set. Job set is the set of Multiple ESS Jobs. When We want to run the same set of ESS jobs Together in Oracle Cloud, then we can add these ESS jobs in the job set and then We only need to run this concurrent Job set and all the ESS jobs under this Job set can be run together in sequentially or Parallelly order.