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How do you end a CA Intertest session from IBM Mainframe COBOL CICS?
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How do you end a CA Intertest session from IBM Mainframe COBOL CICS?

A mainframe operating system is networking software infrastructure that allows a mainframe computer to run programs, connect linked machines, and process complex numerical and data-driven tasks. Modern mainframe design is generally defined by redundant internal engineering, extensive input-output facilities, strict backward compatibility with older software, high hardware and computational utilization rates and high stability and reliability. Well-known operating systems include IBM z/OS, z/VM, zTPF, z/VSE, OS/390, and their predecessors, along with MCP for Unisys ClearPath, and NonStop OS/Guardian on HP/Tandem, and questions regarding the IBM midrange operating system called IBM i, OS/400, and i5/OS.

Mainframe OS

COBOL (Common Business-Oriented Language) is a programming language with English-like syntax. It is readable but verbose compared to other programming languages. CODASYL (Conference on Data Systems Languages) created COBOL in 1959 based on design work from Grace Hopper. It was standardized in 1968. COBOL is still present in large-scale batch processing and transaction processing where legacy applications are being used, usually in government, financial, and administrative systems.