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Closing the Data Set z/OS DFSMSdfp Advanced Services SC23-6861-01 |
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The CLOSE macro instruction restores one or more DCBs so that processing
of their associated data sets can be terminated. Issue CLOSE for all
DCBs that were used by your channel programs. Some of the procedures
performed when CLOSE is executed are:
When CLOSE is issued for a data set on a magnetic tape volume, the system processes labels according to bit settings in the DCBOFLGS field of the DCB. Before issuing CLOSE for magnetic tape, set the appropriate bits in DCBOFLGS. The significant DCBOFLGS bit positions are listed in the EOV macro instruction description. When CLOSE is issued for a data set open for output on a direct access device, the system will try to write a file mark if fields are as described in Device-Dependent Parameters. The parameters and different forms of the CLOSE macro instruction are described in z/OS DFSMS Macro Instructions for Data Sets. |
Copyright IBM Corporation 1990, 2014
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