Overview of an open transaction environment and threadsafe applications
This chapter addresses the following program types (definitions) in CICS:
Quasi-reentrant (QR)
Threadsafe:
 – CICSAPI
 – OPENAPI
Required:
 – CICSAPI
 – OPENAPI
This chapter explains what determines each type, how to define the associated program definition, and the requirements CICS expects of each type. It examines the history of the open transaction environment (OTE) in CICS and the relationship of OTE to open task control blocks (TCBs), task-related user exits (TRUEs), ...

Get Threadsafe Considerations for CICS now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.