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To manipulate sort control statements for filtering data, you must know the format of the header information. The following illustrates page header format for different SORT offsets:
SORT Offset Field Length Not a page header field; this field is added on for sorting. Not a page header field; this field is added on for sorting. The data set number in binary where the value is one less than the number appearing in your JCL. SEGn.PAGE1 would be X’00’. The binary page number within the particular data set and segment. Date of last update in YYMMDD or OYYDDD format. (See note.) Pages updated or created on or after January 1, 2000 contain a new packed non-signed Julian date format, defined as ‘OYYDDD’, where ...
Is the century indicator relative to the first millennium; that is, X’A’ is year 2000, X’B’ is 2100, and so on. On the change of the millennium (1999 December 31 at midnight), the date format changed to the TIBCO Object Service Broker extended Julian page header date. The sort is still able to handle pages updated or created before that date that make use of the YYMMDD format, where ...
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