What PERFORM parameter in EXEC statement is meant for?

Questions by pradeepbhatt   answers by pradeepbhatt

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Kaushiki

  • Jun 1st, 2006
 

Hi

  In os/390 installation, the system programmer defines  several performance groups, which has specific performance characteristics  like storage,speed etc. Now,each job class is associated with a default performance group. If one wants to override the default performance group associated with the class he can do it by this parameter- PERFORM=value in the JOB or EXEC stmt. When used in EXEC stmt only that step will be influenced by that performance group.

kaushiki

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Basu

  • Jul 12th, 2006
 

Hi,

What kind of value is actually given in the PERFORM parameter? Could you explain it?

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Hervey

  • Oct 26th, 2006
 

The value give is normally a number; usually 01-15 with 01 being the lowest and 15 being the highest. Most installations do not allow this parm to be overriden. So, don't be surprised if your job doesn't do anything.

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