difference between jes2 and jes3

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JES2
JES3
      1.       Decentralization.

      2.       Every processor the incoming job individually.

      3.       It is prestep allocation.


      4.       Dataset allowed before step is executed.

      5.       It is a local process.

      6.       Control statement (//*).
1. Centralization.

2. It control process and assign job to sub processor.

3. It is prejob allocation.


4. Dataset allowed before job is schedule.

5. It is global process.

6. Control statement (/*).



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