Problem:

A project is defined in Mainframe Express.

There are several users which access a single CICS regione via a 3270 TELNET connection.

Is there a way of checking / seeing these terminal connections to the CICS region in a determined instance?

Resolution:

Select the dump you want in the active SIT (CICS tab > SIT > Properties > Diagnostics).

Take a system dump (Tools on the IDE > CICS > Region Management > Request System Dump).

View the dump (Tools on the IDE > CICS > Region Management > View Trace/Dump).

In the dump, under the section "Client Control Blocks" (generally at the end of the dump), you will find a list of the attached terminals.

The following is an example:

   Client Control Blocks:

Cnt ID/Addr.   Process-ID Type

  1 x'40553030'      4784 Peer System              C0A800C8 C0A800C8

    a) dfhtcci()               30         8       4784 09 092a81 15411295

    z) dfhtcci()               17         8       4784 09 092a81 15412610

  2 CBRF                0 3270                     NETCBRF

  3 L860             3532 3270                     IVPL860

    a) dfht3prt()              27        11       3532 23 233a83 15411293

    z) dfht3prt()              13        11       3532 23 230381 15412604

  4 L861             3532 3270                     IVPL861

  5 M000              688 3270                     NETM000

    a) dfhtcci()               34       187        688 09 092a81 15411295

    z) dfhtcci()               21       187        688 09 092a81 15412610

  6 MER2                0 3270                     NETMER2

  7 REG1                0 Peer System              COMIVP1  COMIVP1

  8 MOD2                0 3270                     NETMOD2  MODMOD2

  9 MER3                0 3270                     NETMER3

10 REG2                0 Peer System              COMIVP2  COMIVP2

11 MOD3                0 3270                     NETMOD3  MODMOD3

12 MER4                0 3270                     NETMER4

13 MOD4                0 3270                     NETMOD4  MODMOD4

14 MER5                0 3270                     NETMER5

15 MOD5                0 3270                     NETMOD5  MODMOD5

16 N000             4924 3270                     NETN000

    a) dfht3270(dfhcpt3p)      46       190       4924 20 970283 15411364

    z) dfht3270(dfhcpt3p)       6       190       4924 20 970283 15412582

17 UCL2                0 3270                              DFHLU2

18 7feb5a00         4784 Universal Client Gateway          CCITC32

19 7feb5980          688 TN3270 Gateway                    CCITC32

20 7feb57c0         3532 Generic

The entries marked as Type 3270 are connected terminals except for those which are models where the Process-ID is 0.