Abnormal end

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An AbEnd (also abnormal end or abend) is an abnormal termination of software, or a program crash.

This usage derives from an error message from the IBM OS/360, IBM zOS operating systems. Usually capitalized, but may appear as "abend". It is jocularly claimed to be derived from the German word "Abend" meaning "evening".[1] Folklore stories from IBM also refer to the IBM language JCL being developed during the abortion debate in the United States. In a very early form of being politically correct, IBM revised any JCL that referred to ABORT to ABEND.

The most common were ABEND 0C7 (Data exception) and ABEND 0CB (Division by zero)[2]

Errors or crashes on the Novell NetWare network operating system are usually called ABENDs. Communities of NetWare administrators have sprung up around the Internet, such as abend.org.

See also[edit]


  1. ^ "Abend" Archived September 29, 2011, at the Wayback Machine. on dictionary.die.net
  2. ^ List of ABEND codes on madisoncollege.edu

This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.