Limitations of 64-bit support in Debug Tool compatibility mode

Debug Tool compatibility mode, a subset of remote debug mode, supports 64-bit COBOL and C/C++ programs with some limitations. For 64-bit PL/I programs, use standard mode, another subset of remote debug mode, instead.

Subsystems IMS, Db2®, and CICS® are not supported.

The following functions are not supported for 64-bit COBOL and C/C++ programs in Debug Tool compatibility mode:
  • The EQAUEDAT user exit, EQA_DBG_PATH environment variable, and EQA_SRC_PATH environment variable
  • Language Environment® user exit (CEEBXITA)
  • Compiled in hooks
In addition to all the commands strictly related to the unsupported subsystems and functions mentioned above, the following commands are not supported for 64-bit COBOL and C/C++ programs in Debug Tool compatibility mode:
  • z/OS® Debugger commands:
    • CALL %FA
    • SET DYNDEBUG
  • EQAOPTS commands:
    • EQAQPP
    • DLAYDBGCND
    • DLAYDBGXRF
    • DYNDEBUG
    • SVCSCREEN