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JCL & VSAM :: RE: High CPU consumption Job using IAM files as input

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Author: Bill Woodger
Subject: Reply to: High CPU consumption Job using IAM files as input
Posted: Thu Dec 01, 2016 10:32 pm (GMT 5.5)

Well, getting 45m records from a 90m record data set by random access is a very poor design (not blaming you for the design, until you admit to it).

How many hits on the 70k-record file? Consider loading the data you need into a COBOL table, and access from there.

You'd have to explain how the 10m file causes effects to the 90m file, and the relationship of the keys between the two.


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