Transaction is an entity that initiates the execution of task. The transaction identifier identifies the transaction in CICS.
CEMT - master terminal:
CICS-supplied Extended Master Terminal transaction. It displays or manipulates CICS control environment interactively.
Use CEMT to invoke all the master terminal functions. The master terminal program provides dynamic user control of the CICS system. By using this function, an operator can inquire about and change the values of parameters used by CICS, alter the status of the system resources, terminate tasks, and shut down the CICS system.
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