Changes in CICS support for TCAM

CICS® Transaction Server for z/OS®, Version 3 Release 1 does not support the TCAM/ACB interface. It supports the TCAM/DCB interface indirectly.

For several CICS releases, the ACB interface of TCAM has been supported only indirectly: that is, by transaction routing from a back-level terminal-owning region (TOR) to which the terminals were attached. In CICS TS for z/OS, Version 3.1, this indirect support is removed.

In previous CICS releases, the DCB interface of TCAM has been fully supported. That is:
  1. TCAM/DCB could be used to connect terminals to a current-level CICS TOR.
  2. Transactions started by TCAM/DCB-connected terminals could be routed to a current-level CICS AOR.
In CICS TS for z/OS, Version 3.1, only the second operation is supported.
As a result of these changes: