Terminal connects to a TOR which routes the application to an AOR; debugging profiles managed by DTCN

In this scenario, your terminal (TRMC) connects to a TOR, which uses a CICS® transaction to route the application you want to debug to an AOR. The debugging profiles are managed by DTCN and are stored in a temporary storage queue (EQADTCN2) located in a queue-owning region (QOR). You can run the DTCN transaction in any of the regions.

.---------------.     .---------------.      .---------------.
| 3270 terminal |     | 3270 terminal |      | 3270 terminal |
|               |     |               |      |               |
|    TRMA       |     |     TRMB      |      |     TRMC      |
'------,--------'     '-------,-------'      '-,-------------'
       |                      |                |
       |                      |                |
       '-----------------,    |   ,-----------'
                         |    |   |
                         |    |   |
                     .---'----'---'--.
                     |               |
                     |      TOR      |
                     |               |
                     '---.---,---.---'
                         |   |   |
                         |   |   |
                  ,------'   |   '------,
                  |          |          |
          .-------'-------.  |   .------'--------.
          |      AOR      |  |   |      AOR      |
          |               |  |   |               |
          |   CICSAOR1    |  |   |   CICSAOR2    |
          |               |  |   |               |
          '---------------'  |   '---------------'
                  |          |           |
                  |          |           |
                  '------,   |    ,------'
                         |   |    |
                     .---'---'----'----.
                     |      QOR        |
                     |   EQADTCN2      |
                     '-----------------'

For this scenario to work, the CICS system administrator must complete the following tasks for both AORs and the TOR:

Define z/OS® Debugger resources in the CICS CSD and install them in the CICS region, as described in Adding support for debugging under CICS, step 1.
Provide access to these resources, as described in Adding support for debugging under CICS, step 2.a.
Designate a single CICS region as the QOR and define the queue accessible remotely, as described in Sharing DTCN debug profile repository among CICS systems.

Variation on this scenario: The temporary storage queue (EQADTCN2) does not need to be located in a QOR. It can be located in the TOR, any of the AORs, or in the coupling facility. Wherever you put the temporary storage queue, keep the following considerations in mind:

Place the queue where it can be accessed efficiently when the application programs begin, since it is referenced at that point to determine whether the program should be debugged.
The temporary storage queue is accessed by Function Shipping, so allocate a sufficient number of connections between the regions to handle READQ requests.