What is CICS?

CICS Interview Questions

What is CICS?

CICS (Customer Information Control System) is a transaction server that runs primarily on IBM mainframe systems under z/OS and z/VSE.

CICS is a transaction manager designed for rapid, high-volume online processing. This processing is mostly interactive (screen-oriented), but background transactions are possible.

While CICS has its highest profile among financial institutions such as banks and insurance companies, over 90 percent of Fortune 500 companies are reported to rely on CICS (running on z/OS) for their core business functions, beside many governments. CICS is used in bank-teller applications, ATM systems, industrial production control systems, insurance applications and many other types of interactive application.

Recent CICS Transaction Server enhancements include support for Web services and Enterprise Java Beans (EJBs). IBM began shipping the latest release, CICS Transaction Server - Version 3.2, in June of 2007.

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Other Interview Questions

• What are the 3 working storage fields used for every field on the map?
• Into which table is the terminal id registered?
• What will be the length of the eibcalen, if the transaction is used to CICS first time ?
• Which CICS system program is responsible for handling automatic task initialization?
• In SYMBOLIC Cursor Positioning after moving
• What is some of the information available in the EIB area?
• What are the attribute values of Skipper and Stopper fields?
• What is the command which will delete a program LOADed into the main storage using LOAD command ?
• What happens to resources supplied to a transaction when an XCTL command is executed ?
• What will happen if the TDQ that you want to delete is not in the DCT?
• More...