Chapter 12, “Using the ICETOOL utility,” on page shows you how a multipurpose DFSORT utility that uses the capabilities of DFSORT to. DFSORT example. The example in this section shows the JCL and control statements for a simple DFSORT job that uses symbols. Let’s say you created a. DFSORT messages and return codes. . DFSORT input/user exit/output logic examples multi-purpose DFSORT utility ICETOOL.
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The minor control fields are specified following the major control field. Signed free form numeric. When the beginning of a binary field falls on a byte boundary say, for example, on the fourth byteyou can write it in one of three ways: The active collation version rules affects SORT processing as follows: Specify E if you include an E61 user exit to modify control fields before the program sorts them.
A binary field beginning on the third bit of the third byte of a record is represented as 3. Frequently used sort tricks using these utilities are explained in the next chapter.
For example, a file containing names of employees can be split into 26 files, each containing the names starting with A, B, C and so on. Input and output datasets can be defined using user defined DD names. It can compare two or more files on specified field s and create one or more output files like file with matching records, file with non-matching records, etc. PD zeros, lower century dates for example, 19yyupper century dates for example, 20yyPD nines.
Upper century years for example, 20yylower century years for example, 19yy.
The first byte of a floating-point field is interpreted as a signed exponent; the rest of the field is interpreted as the fraction. Used to return control to user and terminate. Other examples of this notation are shown in Figure Usually used to manage VSAM datasets.
Packed decimal yyx and yyxxx full date format with special indicators. Signed numeric with leading separate sign. Utility programs are pre-written programs, widely used in mainframes by system programmers and application developers to achieve day-to-day requirements, organising and maintaining data.
A control field 2 bits long would be represented as 0. It gives best utilization of system resources and efficient operation in bit and bit address spaces. The cultural environment is established by selecting the active locale.
Thus the Y2 formats will collate real dates and special indicators as follows: Unicode Transformation Format, a 8 bit encoding form. BI zeros, blanks, lower century years for example, 19yyupper century years for example, 20yyBI ones. All fields must be completely contained within the first bytes of the record.
If your E15 user exit reformats the record, and INREC is not specified, p must refer to the record as reformatted by your E15 user exit. The first data byte of a fixed-length record has relative position 1. All control fields, except binary, must begin on a byte boundary. BI ones, upper century years for example, 20yylower century years for example, 19yyblanks, BI zeros. Fields containing binary values are described in a “bytes.
However, the maximum length can be less than for various situations, such as the use of certain formats for example, PDthe EQUALS option, and so on. None; must be specified. The total number of bytes occupied by all control fields must not exceed or, when the EQUALS option is in operation, bytes. Requires four facts about each control field in the input records: The first data byte of a variable-length record has relative position 5. The text that follows gives specifications in detail.
Character utilitt zoned yyx Signed numeric with optional leading floating sign. See Data format descriptions for detailed format descriptions. The number of bits specified must not exceed 7. All floating-point data must be normalized before the program can collate it properly. Unicode Transformation Format, a 32 bit encoding form.
Using the ICETOOL utility
This provides sorting for single- or multi-byte character data, based on defined collating rules that retain the cultural and local characteristics of a language.
Two-digit character or zoned-decimal year data. For information on how to add a user exit, see Using your own user exit routines.
The program examines the major control field first, utiligy it must be specified first. A short field is one where the variable-length record is too short to contain the entire field, that is, the field extends beyond the record. For example, the following are all equivalent: Packed decimal xyy and xxxyy full date format with special indicators.
The maximum length of the collected control fields for which Blockset can be used is bytes. It is usually used to create empty dataset or delete an existing dataset.
Unicode Transformation Format, a 16 bit encoding form. You can use an E15 dfxort E61 user exit to do this during processing. The active locale’s collating rules affect SORT processing as follows: Two-digit character or zoned-decimal year data with special indicators.
DFSORT produces sorted records for output according to the collating rules defined in the active locale.