How to tune your COBOL application performance

Did you know that your selection of few COBOL compiler options and run-time options can have significant impacts on run-time performance?

This article is an excerpt from the IBM Whitepaper published in 2002: IBM Enterprise COBOL Version 3 Release 1 Peformance Tuning. I have tried to simplify the contents of the paper for a novice COBOL developer. Click on the link for fruther details. COBOL Performance Tuning

It focuses on some of the factors that can affect the performance of COBOL programs. The tuning methods discussed here are intended to assist users in selecting from the variousoptions which are available for compiling COBOL programs with IBM Enterprise COBOL Version 3Release 1 and executing them with z/OS Language Environment Version 1 Release 2. These methods provide the COBOL programmer with the opportunity to tune the LE run-time environment to potentially improve CPU time performance and the use of system resources.

First, we will look at some compiler and run-time options that affect the run-time performance of a COBOL application. Next, we will look at some efficient COBOL coding techniques that may improve the run-time performance. Finally, we will look at a check list of items to be aware of if a performance problem is encountered with IBM Enterprise COBOL.

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Some useful COBOL links