Supporting On Demand Business Applications with the IBM Problem Determination Tools (APA, DT, DT with Advanced Facilities, FA, File Export, FM, WS)

Chapter 4. Introducing Debug Tool and Debug Tool Utilities & Advanced Functions 71

Result: Debug Tool will execute five statements, one statement at a time.

4.1.8 Other useful commands

This section identifies some other commands that may be useful when debugging.

SET AUTOMONITOR (COBOL and PL/I)

Automonitor support automatically displays the variables referenced in the current statement

and is available only when Debug Tool Utilities and Advanced Functions is installed. To use

this feature, the user must enable automonitoring with the following command:

SET AUTOMONITOR ON ;

Refer to Debug Tool for z/OS Reference and Messages, SC18-9304, for more information

about specific supported compilers and required PTFs.

GO BYPASS

The GO BYPASS command instructs Debug Tool to resume running the program after a

condition occurred, hereby ignoring the condition.

PLAYBACK (COBOL)

Playback support allows you to replay and review the application paths and data values

starting at the point where you began recording. You can simulate the backward execution of

the application and review application data values using appropriate Debug Tool commands.

To do this, playback must be enabled using the following Debug Tool command:

PLAYBACK ENABLE ;

This command starts playback recording. To view the recorded material, use the following

commands:

򐂰 PLAYBACK START ;

Replay the statements starting at the current statement.

򐂰 STEP ; (or PF2)

Move backward one statement.

򐂰 PLAYBACK FORWARD; PLAYBACK BACKWARD ;

Change the replay direction. STEP will move in the direction last set.

򐂰 PLAYBACK STOP ;

Return to the point where the playback was started (using PLAYBACK START).

򐂰 PLAYBACK DISABLE ;

Stop recording.

This command is available only with Debug Tool Utilities and Advanced Functions.

WINDOW CLOSE/OPEN/SIZE/ZOOM

This command closes, opens, resizes, or toggles between the full screen and the currently

defined size of Debug Tool full-screen mode Log, Monitor, and Source windows. The affected

window is defined by the cursor position or can be added as a next parameter in the

command itself.