z/OS MVS JCL Reference
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* Parameter

z/OS MVS JCL Reference
SA23-1385-00

Parameter Type

Positional, optional

Purpose

Use the * (asterisk) parameter to begin an in-stream data set. The data records immediately follow the DD * statement; the records may be in any code such as EBCDIC. The data records end when one of the following is found:
  • /* in the input stream
  • // to indicate another JCL statement
  • The two-character delimiter specified by a DLM parameter on this DD statement
  • The input stream runs out of Start of change records End of change

Use a DATA parameter instead of the * parameter if any of the data records start with //.

Considerations for an APPC Scheduling Environment

The * parameter has no function in an APPC scheduling environment. If you code *, the system will check it for syntax and otherwise ignore it.

Parent topic: DD statement

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