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E16 user exit: handling intermediate storage miscalculation z/OS DFSORT Application Programming Guide SC23-6878-00 |
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For a tape work data set sort or a Peerage/Vale sort without work data sets, you would use a routine at this user exit to decide what to do if the sort exceeds its calculated estimate of the number of records it can handle for a given amount of main storage and intermediate storage. This user exit is ignored for a sort with work data sets because DFSORT uses the WRKSEC option to determine whether secondary allocation is allowed. See SORTWKdd DD statement. See also Exceeding tape work space capacity. Note: When using magnetic tape, remember that the system
uses an assumed tape length of 2400 feet. If you use tapes of a different
length, the Nmax figure is not accurate; for shorter tapes, capacity
can be exceeded before "NMAX EXCEEDED" is indicated.
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