Disabling 3270 screen buffer capture

To capture 3270 screen data, Z Abend Investigator issues command RECEIVE BUFFER to the terminal. However, the following errors might occur:
  • The terminal is not an actual 3270 device
  • The terminal is not in a state to handle the command F2 READBUF

In such cases, CICS® abends the RECEIVE BUFFER with abend ATNI, which results in recursive calls to the XPCABND and XDUREC global user exits.

If it is an issue that the ATNI abends, add the following JCL statement to your CICS start-up proc:
//HFZNOCRB DD DUMMY

The statement tells Z Abend Investigator to skip the 3270 screen capture (RECEIVE BUFFER) for all 3270 devices in the region. As a result, the section Last CICS 3270 Screen Buffer is not included in the Z Abend Investigator analysis report.