z/OS DFSMSdss Storage Administration
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REPLACEUNCONDITIONAL

z/OS DFSMSdss Storage Administration
SC23-6868-01

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>>-+--------------------------+--------------------------------><
   '-+-REPLACEUnconditional-+-'   
     '-REPUNC---------------'     

REPLACEUNCONDITIONAL specifies that DFSMSdss is to search the target volumes for usable preallocated data sets. If a usable preallocated target data set is found, it IS replaced. When used with the RENAMEUnconditional keyword, usable preallocated data sets with the new name are replaced. When used without the RENAMEUnconditional keyword, usable preallocated data sets with the same name as the source data set are replaced. If no preallocated target is found, DFSMSdss attempts to allocate a data set. The REPLACE and REPLACEUnconditional keywords can not be specified together.

See the REPLACE keyword description for information about how target volume selection is performed.

Note:
  1. If REPLACEUNCONDITIONAL is specified with the COPY command:
    • The SMS constructs already associated with the preallocated target data set remain the same. If the preallocated target data set is scratched and reallocated, the SMS constructs used are those returned by the ACS routines for the source data set name.
    • The CA Reclaim attribute already associated with the preallocated target data set remain the same.
  2. CATALOG and RECATALOG are ignored for preallocated data sets.
  3. If the source data set is an extended-addressable VSAM data set, then the target must also be an extended-addressable VSAM data set.
  4. If the source is a large format sequential data set, but the preallocated new name target is not a large format sequential data set, the preallocated target will be used and turned into a large format sequential data set as long as it has enough allocated space for the source data set. If the preallocated new name target does not have enough allocated space, it will be scratched and reallocated as a large format sequential data set with enough space for the source data set. If the name of the preallocated target is the same as the source data set, then see the REPLACE keyword.

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