CICS Considerations for the EZA Interfaces

Before the EZA API (EZASMI macro and EZASOKET call interface) can be used in a CICS TS Transaction Environment, its "task-related-user-exit" (TRUE) routine has to be started. This EZA "task-related-user-exit" is named EZATRUE. It is responsible for allocating task-related working storage to the EZA API processing environment and for possible cleanup processing during CICS end-of-task processing.

The "task-related-user-exit" EZATRUE is started/stopped with program EZASTRUE by one of the following means:

transaction EZAT (EZAT START starts EZATRUE, EZAT STOP stops it)
entry of EZASTRUE to the PLTPI (for auto-startup during CICS startup) and to the PLTSD (for auto-shutdown during CICS shutdown)

an EXEC CICS® LINK to program EZASTRUE with the following COMMAREA parameter list:

Table 1. COMMAREA parameter list
Offset	Length	Description
0	8	Eyecatcher "EZATRUE"
8	1	Request Type:
		"S"	Start Request
		"T"	Termination Request
9	1	Return Code from EZASTRUE:
		0	EZATRUE start/termination successful
		4	EZATRUE already in requested state
		8	Failure to start/terminate EZATRUE
		16	Invalid parameter list