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Avoiding Control Area Splits z/OS DFSMS Using Data Sets SC23-6855-00 |
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The second option you might consider is to ensure that the index-set control interval is large enough to contain the key of each control interval in the control area. This reduces the number of control area splits. This option also keeps to a minimum the number of index levels required, thereby reducing search time and improving performance. However, this option can increase rotational delay and data transfer time for the index-set control intervals. It also increases virtual storage requirements for index records. |
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