Dear all

  The application programmers in  our shop always  allocate many  big 
datesets(PS,PDS,VSAM),but they only use <10% space  oF the datasets.

  I want to release the spaces that aren't used by SMS .
 
  Could you tell me how to do it? 

  I wonder what situations we need to use Space Constraint Relief  in DC and 
PARTIAL RELEASE in MC?
  
Any suggestions is greatly appreicated!

Thanks a lot!

Best Regards,

Jason Cai

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