CICS Transaction Server

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Customer Information Control System (CICS). Transaction management and processing system for z/OS and z/VSE. Also runs on other platforms including System i, AIX, Microsoft Windows and HP-UX as TXSeries.

Originally released by IBM as Public Utility Customer Infomation Control System, or CICS/OS in 1968 - a program offering. CICS/VS for VSE (later z/VSE), OS/VS1 and OS/VS2 (later z/OS) released in 1974. Applications originally used macros to call CICS services. CICS/VS 1.3 and CICS/DOS/VS 1.7 introduced Command Level Programming: applications used a command style to call CICS services, and passed through a pre-processor to convert these to macros. CICS/MVS 2.1.2 and CICS/VSE 2.3 were the last CICS releases to support macro level programming.

Support for VSE ended in 2023. CICS/VSE acquired by 21st Century Software and renamed OLTP for VSEn.

IBM Product IDs:

z/VSE

• CICS Transaction Server for VSE/ESA Product ID: 5648-054
• CICS/VSE 2.x Product ID: 5686-026
• CICS/DOS/VS Product ID: 5746-XX3

z/OS

• CICS Transaction Server for z/OS 6.x Product ID: 5655-YA1
• CICS Transaction Server for z/OS 5.x Product ID: 5655-Y04
• CICS Transaction Server for z/OS 4.x Product ID: 5655-S97
• CICS Transaction Server for z/OS 3.x Product ID: 5655-M15
• CICS Transaction Server for z/OS 2.x Product ID: 5697-E93
• CICS Transaction Server for OS/390 1.x Product ID: 5655-147
• CICS/ESA 4.x Product ID: 5655-018
• CICS/ESA 3.x Product ID: 5685-083
• CICS/MVS 2.x Product ID: 5665-403
• CICS/OS/VS, CICS/VS 1.x Product ID: 5740-XX1