As mainframe programming language Cobol marks 50 years of service, dedicated government users make plans for keeping the reliable old applications humming along.
In the beginning, or not too long after, there was Cobol. And it was good.
Programs written in the venerable Common Business-Oriented Language were once used around the world in governmental and military agencies, in commercial enterprises, and on operating systems such as IBM's z/OS, Microsoft's Windows, and the POSIX families — Unix, Linux etc. As recently as 1997, the Gartner Group reported, 80 percent of the world's business ran on Cobol with more than 200 billion lines of code in existence and an estimated 5 billion lines of new code annually.
Fifty years after its creation, however, old Cobol is showing its age spots. Like the baby boomers who used it to create a wealth of mainframe applications years ago, Cobol is creaking and groaning its way into retirement. The Java and .NET generation is ready to take over.
At least, that’s what the new Web-is-everything scenario calls for. The problem is that scripted futures and reality rarely cooperate. With the number of blown information technology modernization programs mounting and agency budgets tightening, Cobol may have some life left in yet.
That’s not to say that the newer, more Web-centric languages don’t dominate. Cobol simply can’t compete when it comes to displaying output in graphical form. Unless you want to keep using that old text-based green-creen system, Java and those other languages must rule, at least on the public-facing front end.
But in the core databases — the sources that those front-end applications take their data from — it’s another matter.
“The fact is that for back-end computations, nothing is better than Cobol,” said Bill Gray, deputy commissioner for systems at the Social Security Administration.
Also, because Cobol uses programming terminology that is close to the way people use regular English, it’s still considered the best language for capturing an organization’s business rules. Other languages use fairly arcane terminology that make it hard to capture those processes.
However, that puts organizations in a bind. Over time, Cobol has become the institutional memory of an organization, at least when it comes to business rules. People sit at their computers and use the applications that appear on their screens without ever questioning why they use those and not others.
In many cases, the reason is that the organization has decreed the use of Cobol, said John Hill, vice president at Computech, a professional services firm. And that poses a dilemma. Many agencies want to get off Cobol and build modern systems that will last the next 30 years, Hill said. But those Cobol systems handle such a huge part of the transactional load that they are not easy to replace when so much vital traffic passes through daily.
It can be done. Computech helped the Customs and Border Protection agency move from a 7 million-line Cobol system to one based on Java in a phased transition. The Defense Logistics Agency used concerns about the Year 2000 date changeover as the catalyst to move away from a Cobol system to an SAP enterprise resource platform, though it cost about $750 million.
But other agencies will not be making such an abrupt change. The Social Security Administration is wrapping essential Cobol applications in Extensible Markup Language envelopes and publishing them as service-oriented architecture services. It will retain about 20 percent of the 36 million lines of Cobol code it uses, Hill said.
The U.S. Postal Service considered rewriting its Cobol-based product tracking system in Java but, with 15 years of business logic embedded in that Cobol code, USPS officials eventually realized that it would be a massive job. They opted instead to use a Micro Focus compiler to repurpose the code so it could run on a mainframe Linux system.
“It would have been much more costly to convert to Java,” said John Byrne, manager of USPS’ Integrated Business Systems Solution Centers and the point person for the agency’s application development. “There are also unknown risks. We’ve done other things in Java, and they’ve not gone well.”
The Cobol/Linux path is allowing USPS to individually migrate each of its 56 product-tracking system event types, which ensures the system remains fully operational during the transition. The success of that has been good enough that the Postal Service wants to accelerate those kinds of transitions for its other 100 or so Cobol systems, Byrne said. The decision has already been made to move another three of its larger Cobol systems to Linux.
Help (Still) Wanted: Cobol skills
Agencies could face a shortage of experienced Cobol programmers during the next few years, as the people who have that longtime expertise retire. Most universities and colleges have dropped Cobol from their curriculum in favor of teaching more modern languages, such as Java.
But Cobol could be making a comeback at the university level, with an assist from industry. For example, Micro Focus, a software developer with customers around the world, has been working with schools in a number of countries to boost the level of graduates with Cobol skills.
In the U.S., those include Texas A&M University at Kingsville, New York City College of Technology, Kansas State University, University of Wisconsin at Platteville, Central Carolina Technical College, and Colorado Tech University.
There should be a large number of people with Cobol expertise graduating from those schools beginning this year, said Bob Morin, director of business development for the federal government sector at Micro Focus.
However, even if that new crop of programmers were not available, that’s not a reason to convert Cobol systems to Java, as some have argued, Byrne said. He said he thinks there will be enough Cobol programmers at USPS to last another 10 years, and as they begin to leave, the agency will start its own Cobol training program.
SSA is going the same route. The biggest challenge it faces is providing the kind of incentives for Cobol that programmers now have to build new and fancy things with the more modern languages, Gray said, though he’s found that many new hires are amenable to learning Cobol.
Morin said he believes the federal government is in the beginning stages of finally accepting something it’s known about for some years.
“Because of the number of failures of such things as [enterprise resource planning] and commercial off-the-shelf programs, they see that’s not the way to go for the most part,” he said. “At the same time, they realize what they have invested in Cobol, so now they are looking at how they can take advantage of that.”
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