LOADDEBUGDATA command

z/OS® Debugger automatically loads the debug information for a compile unit (CU) when any of the following conditions applies:
  • Explicit debug mode is not active when the compile unit was written in a Language Environment®-enabled, high-level language and compiled with the TEST or DEBUG compiler option.
  • Explicit debug mode is not active when the compile unit was written in LangX COBOL and the EQAOPTS command LDDAUTOLANGX,COBOL was specified.

In the following situations, you must use the LOADDEBUGDATA (LDD) command to request that z/OS Debugger load the debug data:

  • The compile unit was written in assembler or LangX COBOL.
  • Explicit debug mode is active and the compile unit was written in a Language Environment-enabled, high-level language and compiled with the TEST or DEBUG compiler option.