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Completing the data control block z/OS MVS JCL Reference SA23-1385-00 |
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The system obtains data control block information from the following
sources, in override order:
Therefore, if you supply information for the same DCB field in your processing program and on a DD statement, the system ignores the DD DCB subparameter. If a DD statement and the data set label supply information for the same DCB field, the system ignores the data set label information. Note: When concatenated data sets are involved, the DCB
is completed based on the type of data set and how the processing
program uses the data set. See z/OS DFSMS Using Data Sets for
more information.
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