The Debugger Editor

When you launch a debug session, the debugger uses the Debugger Editor to display source. This editor offers several debug actions.

When a debug session launches, source is opened in the editor in browse mode and it cannot be modified. Source can only be modified in the Debugger Editor when it is opened with the editor outside of a debug session.

If you are debugging assembler code, you will need to issue a SET ASSEM ON and then perform a z/OS® Debugger LDD (LOADDEBUGDATA) for each assembler compile unit to load the appropriate EQALANGX file. When you debug COBOL applications, depending on the compiler versions and options, either the expanded listing, or the source view, or both might be available. For all other applications, only the source view is available.

When source cannot be found, the editor opens without source. For information about how to locate source, see Locating source.