z/OS DFSORT Tuning Guide
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ICEGENER

z/OS DFSORT Tuning Guide
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DFSORT's ICEGENER facility allows you to more efficiently process IEBGENER jobs. Qualifying IEBGENER jobs are processed by the equivalent, but more efficient, DFSORT copy function. If the DFSORT copy function cannot be used (for example, IEBGENER control statements are specified), control is automatically transferred to the IEBGENER program.

If your site has installed ICEGENER as an automatic replacement for IEBGENER, you need not make any changes to your jobs to use ICEGENER. If your site has not chosen automatic use of ICEGENER, you can use ICEGENER by substituting the name ICEGENER for IEBGENER on any EXEC statement or LINK macro call.

The use of ICEGENER rather than IEBGENER for copy applications can result in significant savings in elapsed time, CPU time, and EXCP counts. Figure 1 shows an example of the tremendous performance advantages of ICEGENER over IEBGENER.

Figure 1. ICEGENER versus IEBGENER Copy Comparison
Bar chart showing savings in elapsed time, CPU time, and EXCP counts for ICEGENER over IEBGENER.

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