Block size considerations
The minimum block size is 4096. Generally, the larger the block size the better the performance of loading NGT products before execution. Since this occurs only once per utility step, the block size is a not a major consideration unless you use a small block size such as 6144.
In this case, for certain utility functions against small DB2 spaces (for example, copying a table space of less than 10 cylinders) a disproportionate number of Execute Channel Programs (EXCPs) reported is attributable to program fetch activity.
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