IBM CICS Performance Series: CICS TS for z/OS V5 Performance Report

Open transaction environment

This chapter introduces the open transaction environment and provides a reference for the task control block (TCB) modes that are used when an application is dispatched within CICS.

This chapter includes the following topics:

•4.1, “Introduction to the open transaction environment” on page 32

•4.2, “TCB modes” on page 32

•4.3, “Changing TCB modes” on page 33

•4.4, “Understanding the effect of change mode operations” on page 36

4.1 Introduction to the open transaction environment

The open transaction environment (OTE) ...