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Data event control block z/OS DFSMS Macro Instructions for Data Sets SC23-6852-02 |
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A DECB is constructed as part of the expansion of READ and WRITE macros and is used to pass parameters to the control program, help control the read or write operation, and receive indications of the success or failure of the operation. The DECB is named by the READ or WRITE macro, begins on a fullword boundary, resides below the 16MB line, and contains the information shown in the following illustration:
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Copyright IBM Corporation 1990, 2014
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