Because VSAM does not allow an empty cluster to be opened for input or update, the CA FAVER cluster priming feature opens a cluster for output, writes one record and closes it, opens it for update, erases the record just written, and closes it. This feature creates a cluster with no records. However, VSAM does not consider the cluster empty, and it can be opened for update or input. EXPORT recognizes primed clusters, and RESTORE primes them.
Note: For more information on how to disable this feature or to prime clusters that have never been primed, see Cluster Names: Optional Parameters.
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