ChangeMan 8.1 sneak peek: ERO turbo charge

Business man runningThis is the first installment of an occasional series of posts in the run up to the launch of ChangeMan 8.1 later this year. As part of the routine pre-launch activities I’ll be chatting to the development team to learn about the cool features that have been added to this latest version.

ChangeMan ZMF is used by some of the largest mainframe development shops in the world. It is typical for these organizations to have hundreds of thousands of components managed and tens of thousands of components in motion. Keeping track of that requires the kind of sophistication and advanced capabilities that can only be found in ChangeMan ZMF.

Many of the largest customers in the world have the most complex and sophisticated release management problems and they make use of the Enterprise Release Option (ERO) of ChangeMan ZMF. Even though the mainframe has blisteringly fast performance, displaying a list of the 4,000 to 10,000 members of a release (typical for several ERO customers) could take a while.

In ChangeMan ZMF 8.1 the ERO process of selecting, searching and sorting lists has had a major overhaul. Where a list of a few thousand components might have taken several minutes in the past this has been reduced to mere seconds. This has been achieved through a number of thoughtful innovations in how we retrieve the information, how we cache it and how we present it. We have also optimized the access methods so only relevant items are retrieved in the first place.

New filtering capabilities also make it possible to really refine these lists to just what you need making the delivery times even faster. As Dave Banovetz, lead engineer on ERO said “the more defined your query the faster you get results.”

Due to several z/OS operating system constraints, it was common to maximize the storage utilization on these multi-thousand component lists. Again some very clever programming allows us to capture all the data and keep well short of these memory limitations.

To learn more about the new features and capabilities in ChangeMan ZMF version 8.1 please contact me.

Kevin Parker is a 30 year industry veteran, holder of three technology patents and is VP of Worldwide Marketing at Serena Software. He speaks and writes on application development methodologies, business analysis, quality assurance techniques, governance, open source issues, and tool interoperability, from the mainframe to distributed platforms to the web and mobile and embedded systems.

Tags: Serena


ron wells on August 27th, 2014 at 9:47 am

Due to several z/OS operating system constraints>>??? and what constraints are you referring too?

Kevin Parker on August 27th, 2014 at 9:56 am

Ron, good question.

Sometimes, given the huge volume of components and packages large customers have in a release, the operating system limits for dataset concatenations and memory allocations below the line can be reached. We have some customers who manage significant numbers, in the hundreds of thousands, of components with many tens of thousands of components being worked upon in each release. This is why they use the ChangeMan ZMF Enterprise Release Option because no other solution has the ability to manage that level of volume or complexity.

So these customers have been asking for ways to speed up the displaying of lists both in online and batch mode. And that’s what we’ve done. Along the way we have also worked on making sure that the limits set by IBM don’t affect our customer’s ability to deploy reliably and repeatably. Hope this answers your question.


Viet Le on September 2nd, 2014 at 5:49 am


Yes, I would like to learn more about the new features and capabilities in ChangeMan 8.1

Kevin Parker on September 2nd, 2014 at 7:38 am

Dear Viet Le,

Very happy to do so. Call me at 650-481-3494 or email me at so we can arrange a mutually convenient time.


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