A SELECTIVE Rebuild is performed when one or both of the parameters DSNAMES or FILENOS are specified. A Selective Rebuild can be performed whether the Archive is defined in an ARCHVOLS entry or not. Data sets that match any pattern in the DSNAMES parameter or the FILENOS parameter are considered for rebuilding. Archived data sets are not rebuilt if there is a current DSNINDEX entry. The ARCHVOLS entry is updated to include any DSNINDEX entries that are rebuilt. A Selective Rebuild is mutually exclusive with an ARCONLY Rebuild and will cause a syntax error.
A Selective Rebuild can be performed when it is necessary to recover only a small number of Data Set entries that have been deleted from the FILES data set and the Archive data set has not been deleted or written over.
A Selective Rebuild will still read the entire Archive data set even if only the FILENOS parameter was specified and all of the requested files were already recovered. This is to allow Rebuild to correctly build the ARCHVOLS entry.
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