z/OS DFSMSdfp Storage Administration
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Read-only variables not available when LIKE is used

z/OS DFSMSdfp Storage Administration
SC23-6860-01

When you use the LIKE parameter on a JCL DD statement or the ALLOCATE command, the following read-only variable values are not available to the ACS routines:
  • &DSNTYPE
  • &DSORG
  • &MAXSIZE
  • &RECORG
  • &SIZE
Thus, a data set allocated like a second data set might go into in a different storage group than the second data set.
Parent topic: Constraints when using read-only variables

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