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abend


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DEFINITION - An abend (a combining of two words, abnormal end, when operator messages were as short as possible) is an abnormal, rather than planned, end or termination of a computer program because of some problem with how it is running. For example, the program may have attempted to address some computer memory space that it was not given the right to address. This term is more common in older mainframe systems than in PC systems.

When used, abend usually refers to the abnormal end of an application program because of application errors. Failure of the operating system is usually called a crash. In smaller systems, the term crash is applied to both application program and operating system failure. A crash also can be caused by hardware failure.

Learn more about Mainframe computers
Mainframe Management: The modern mainframe: This isn't your gramps' Big Iron. Mainframe management has evolved dramatically over the past few years.
Roadmap to mainframe application modernization: In a three-part series, Infostructure Associates president Wayne Kernochan outlines a modernization path for business-critical applications in an existing mainframe environment.
Top five mainframe tips: Data center pros are asking questions about the expanding role mainframes play in the business.
Mainframe Management: The modern mainframe: This isn't your gramps' Big Iron. Mainframe management has evolved dramatically over the past few years.
Using CICS dump tables to manage problems in online systems: The CICS dump table feature can be useful for diagnosing and managing problems in online systems when the information you need isn't available through default channels.
High mainframe software costs may lead to platform's demise: Are mainframe software costs too high or does software productivity and reduced labor costs lead to lower mainframe total cost of ownership (TCO)?
Manage CICS workloads with transaction classes: Using transaction classes is a great way to manage CICS workloads that come in unpredictable increments. Learn how to use transaction classes and get examples in this tip.
Run CICS in batch to beat a shrinking batch window: As batch windows are getting shorter, it becomes harder to run traditional VSAM-based CICS systems. Try running CICS in batch as a low-cost solution.

CONTRIBUTORS: Kevin Gaskins
LAST UPDATED: 20 Oct 2005

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