YES specifies that CA Datacom CICS Services starts the execution of the DBNTRY TRUE and OPEN/CLOSE processes on an OPEN TCB. In this case, it is the L8 TCB since CA Datacom CICS Services programs run with EXECKEY=CICS.
NO specifies that the CA Datacom CICS Services programs are enabled as API(CICSSAPI). Specifically, the CA Datacom CICS Services programs (request processing) run on the same TCB as the calling program, that is, either a QR TCB or an OPEN TCB, whichever the application program is running.
Important! Take caution in setting the proper value. Monitor the system performance and measure it to adjust the value appropriately.
The MAXOPENTCBS system initialization parameter controls the number of open TCBs permitted for this purpose.
YES, NO
NO
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