To define variable length tables in COBOL, we usually specify the OCCURS ... DEPENDING ON clause in the data description entry for an item contained within a group structure. While this defines an item with a variable number of occurrences at run time, in earlier versions before Enterprise COBOL V5.1, we also need to specify a maximum number of occurrences in the syntax , and hence a maximum size for the table and the containing group, which causes usability problems in some contexts. In particular, this problem occurs when defining... [More]
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A playlist is being populated on Rational Channel on YouTube that will cover many advanced use topics that will make you a power user of IBM Rational Developer for Power Systems Software. Feel free to learn advanced debugging tips and more at this playlist http://www.youtube.com/user/IBMRational#p/c/B6573F2E9C8FB819 Keep coming back as more topics are planned over time. Edmund Reinhardt IBM RD Power
With Enterprise COBOL for z/OS V5.1.1, the LIST option output in the compiler listing is enhanced to include a new special register table . There you can find the location information for all the COBOL special register variables. The offset to the table can be found in the second entry of the PPA3, and the offset is relative to the starting address of the PPA3.The special register table format is similar with that of the base locator table. The following example further explains the special register table: Each entry in the special... [More]
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Did you know that COBOL for AIX, V4.1 contains a new compiler option which lets you selectively target code generation of your applications to exploit POWER7 systems architecture? Imagine you could boost the performance of your existing hardware assets just by upgrading your compiler! Find out more now on how you can optimize your infrastructure, boost your productivity and shorten your development time with IBM Compilers on POWER7 technology at www.ibm.com/poweryourinnovation .
Both IMS and Enterprise COBOL had new and exciting announcements this year. COBOL and IMS continue to deliver leading edge technologies to facilitate application integration, modernization, as well as improving application performance. Roland Koo, Product Manager for Rational Compilers, and Haley Fung, IMS Senior Developer, identify why it is important to upgrade to the latest versions of IMS and COBOL together. Speakers: Haley Fung, Roland Koo, and Kimberly Gist. Go HERE to listen to this informative podcast.
Broadcast date: March 12, 2014, 11:00 a.m. EDT / 3:00 p.m. GMT Developed for: Application programmers and managers; operations managers; system programmers Technical level: Basic You will learn how to: Improve insight into application regressions and quality Reduce test environment cost and set-up time Reduce bottlenecks in mobile development caused by back-end systems testing Expedite test and delivery cycles Speakers: Timothy Hahn, Distinguished Engineer, CTO Enterprise Modernization, IBM Software Group Francois Dumont,... [More]
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This is the first in a series of blog entries that I'll be creating on the subject of debugging IBM Enterprise COBOL for z/OS V5.1 using Debug Tool. In particular, I'll be pointing out some of the improvements you'll see compared to debugging earlier versions of Enterprise COBOL. The first improvement has to do with Level 88 Condition Names. With previous versions of Enterprise COBOL, the LIST command will show you the value of the Level 88 Condition Name (TRUE or FALSE), but not the value of variable with which the Condition Name... [More]
In COBOL for z/OS, V5,1, when compiling your source files that are too complex or in a relatively large size, and if you have specified the OPTIMIZE level, it may take excessive amount of time or storage. Thus a new compiler option, MAXPCF , is introduced to allow you to control the amount of time and storage used when optimizing a program. You can specify the maximum program complexity factor with this option. The new term, Program Complexity Factor (PCF), is a value calculated by the compiler, and represents the complexity of the program... [More]
Extended source format is introduced in COBOL for AIX, V4.1. The new extended source format is divided into distinct areas as before, but permits lines varying in length from a minimum of 0 bytes to a maximum of 252 bytes. The following figures illustrate the key difference between the two formats: Fixed source format: Extended source format: For both formats, lines shorter than the maximum length are logically extended with space to the maximum length. You can use the SRCFORMAT option to indicate whether your COBOL source... [More]