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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JCL – Utility Programs
Requires four facts about each control field in the input records: Signed numeric with trailing overpunch sign.
Two-digit character or zoned-decimal year data.
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. A SORT statement can also be used to specify a copy application.
BI ones, upper century years for example, 20yylower century years for example, 19yyblanks, BI zeros.
JCL Utility Programs
The minor control fields are specified following the major control field. A control field 2 bits long would be represented as 0.
Signed numeric with leading separate sign. The program examines the major control field first, and it must be specified first.
Using the ICETOOL utility
The first 4 bytes contain the record descriptor word. Two-digit packed-decimal year data.
First, specify the byte location relative to the beginning of the record and follow it with a period. Unicode Transformation Format, a 16 bit encoding form. Signed free form numeric. 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. Frequently used sort tricks using these utilities are explained in the next chapter.
The first data byte of a variable-length record has relative position utilihy. It gives best utilization of system resources and efficient operation in bit and bit address spaces. Then, specify the bit location relative to the beginning of that byte. When you determine the total, count a binary field as occupying an entire byte if it occupies any part of it.
The maximum length of the collected control fields for which Blockset can be used is bytes. Other examples of this notation are shown in Figure Usually, this is not recommended in view of performance for large files. Unicode Transformation Format, a 32 bit encoding form. Character with utulity collating sequence. Packed decimal yyx and yyxxx full date format with special indicators.
Used to copy selected parts of a JCL. It is usually used to create empty dataset or delete an existing dataset. Specify E if you include an E61 user exit to modify control fields before the program sorts them.
Two-digit binary year data. User-defined data type requires an EFS program. The SORT control statement must be used when a sorting application is performed; this statement describes the control fields in the input records on which the program sorts. The first data byte dsfort a fixed-length record has relative position 1.
DFSORT TUTORIAL REFERENCE STUDY MATERIAL – SORT JCL – IBM MAINFRAME
Create, delete, rename, catalog, uncatalog datasets other than PDS. A binary field beginning on the third bit of the third byte of a record is represented as 3. The options available on the SORT statement can be specified utilityy other sources as well. Packed decimal xyy and xxxyy full date format with special indicators. If locale processing is to be used, the active locale will only be used to process character CH control fields.
All control fields, except binary, must begin on a byte boundary.