z/OS V1R6.0 DFSMS Access Method Services for Catalogs

REPROWhen the source cluster is copied, its records might have keys or relativerecord numbers identical to the keys or relative record numbers of data recordsin the target cluster. In this case, the source record replaces the target record.REPLACE|NOREPLACE is not used when copying integrated catalog facilitycatalogs because these catalogs do not use the catalog unload and reloadfunctions.REPLACE|NOREPLACE is not applicable for VSAM targets.REPLACEWhen a key-sequenced data set (other than a catalog) is copied, eachsource record with a key matching a target record’s key replaces the targetrecord. Otherwise, the source record is inserted into its appropriate place inthe target cluster.When a relative record data set is copied, each source record with arelative record number that identifies a data record (rather than an emptyslot) in the target data set replaces the target data record. Otherwise, thesource data record is inserted into the empty slot its relative record numberidentifies.REPLACE cannot be used if the target data set is identified as a paththrough an alternate index, or if the target data set is a base cluster whoseupgrade data set includes an alternate index defined with the unique-keyattribute.Abbreviation: REPNOREPLACEWhen a key-sequenced data set (other than a catalog) is copied, targetrecords are not replaced by source records. For each source record whosekey matches a target record’s key, a “duplicate record” message is issued.When a relative record data set is copied, target records are not replacedby source records. For each source record whose relative record numberidentifies a target data record instead of an empty slot, a “duplicaterecord” message is issued.When copying something other than a VSAM data set to a sequential dataset, the error limit parameter allows more than four mismatches or errors.Abbreviation: NREPREUSE|NOREUSEspecifies if the target data set is to be opened as a reusable data set. Thisparameter is valid only for VSAM data sets.REUSEspecifies that the target data set, specified with OUTFILE orOUTDATASET, is opened as a reusable data set whether or not it wasdefined as reusable with the REUSE parameter. (See the DEFINE CLUSTERcommand description.) If the data set was defined with REUSE, itshigh-used relative byte address (RBA) is reset to zero (that is, the data setis effectively empty) and the operation proceeds. When you open areusable data set with the reset option, that data set cannot be shared withother jobs.If REUSE is specified and the data set was originally defined with theNOREUSE option, the data set must be empty; if not, the REPROcommand ends with an error message.Abbreviation: RUS312 z/OS V1R6.0 DFSMS Access Method Services for Catalogs