7202741 abap debugging

8/3/2019 7202741 ABAP Debugging

1/23

ABAP DebuggingABAP Debugging

Presented by,Presented by,

Sylendra Prasad MSylendra Prasad M


2/23

Agenda for the dayAgenda for the day

Debugging An overviewDebugging An overview


Debugging Getting startedDebugging Getting started

Break points & Watch pointsBreak points & Watch points

Debugging ToolsDebugging Tools

Debugging in BackgroundDebugging in Background


3/23

Debugging An overviewDebugging An overview

Stepwise method of finding out errors or bugs.Stepwise method of finding out errors or bugs.

The basic steps involveThe basic steps involve Recognize that the bug existsRecognize that the bug exists

Isolate source of bugIsolate source of bug Identify cause of bugIdentify cause of bug

Determine the fix for the bugDetermine the fix for the bug

Apply the fix and test it.Apply the fix and test it.

Software Debugging is done by special softwareSoftware Debugging is done by special software

called debuggers.called debuggers.


4/23


ABAP Debugger allows you to interrupt theABAP Debugger allows you to interrupt the

running program after each step, allowing you torunning program after each step, allowing you tocheck intermediate results and processing logic.check intermediate results and processing logic.

Debugger can be called in two ways.Debugger can be called in two ways.

By setting break points.By setting break points.Write BREAK-POINT or BREAK statement in program(static)Write BREAK-POINT or BREAK statement in program(static)

Click STOP button in the toolbar of program (dynamic)Click STOP button in the toolbar of program (dynamic)

By running the program in debugging mode.By running the program in debugging mode.Using \hUsing \h

Setting break points at specified code lines.Setting break points at specified code lines.

Double clicking to set break points.Double clicking to set break points.


5/23

Debugging Getting startedDebugging Getting started

To switch on debugging, type /h and press enter.To switch on debugging, type /h and press enter.

Following buttons are used to continueFollowing buttons are used to continue

debugging.debugging.


6/23

1.1. Single step: Used to step through the programSingle step: Used to step through the program

statement by statement.For subroutines, this will gostatement by statement.For subroutines, this will go

inside the subroutine. .(F5 key can be used).inside the subroutine. .(F5 key can be used).

2.2. Execute: Similar to single step , but for subroutines,Execute: Similar to single step , but for subroutines,

this completely executes the subroutine,without goingthis completely executes the subroutine,without going

inside the routine.(F6 key can be used).inside the routine.(F6 key can be used).

3.3. Return: Used to return from a subroutine, or a calledReturn: Used to return from a subroutine, or a called

program to a calling program.program to a calling program.

4.4. Run: Used to process the program until the next staticRun: Used to process the program until the next static

or dynamic break point.If no more breakpoints areor dynamic break point.If no more breakpoints are

there, this will exit the debugging mode and executesthere, this will exit the debugging mode and executes

the rest of the program normally(F8 key).the rest of the program normally(F8 key).

5.5. Watchpoints: Used to interrupt the execution ofWatchpoints: Used to interrupt the execution of

program when variable reaches a particular value.Willprogram when variable reaches a particular value.Will

be discussed in detail later.be discussed in detail later.


7/23

Break pointsBreak points

Causes program execution to stop at thatCauses program execution to stop at that

location and start the debugger.location and start the debugger. Static Break-point.Static Break-point. User independent breakpoint:User independent breakpoint:

Using statement BREAK-POINT.Using statement BREAK-POINT.

Interrupted when execution reaches the line of code.Interrupted when execution reaches the line of code.

Useful in development phase and removed beforeUseful in development phase and removed before

transported.transported.

Can number the break points to identify them easier.Can number the break points to identify them easier.

User dependent breakpoint:User dependent breakpoint: Interrupted only for a specific user.Interrupted only for a specific user.

Using the statement BREAK .Using the statement BREAK .

Visible in program, but not active when other users use theVisible in program, but not active when other users use the

program.program.


8/23

SAMPLE PROGRAMSAMPLE PROGRAM

Static break points must be removed fromStatic break points must be removed from

program after testing.program after testing.


9/23

Dynamic break point:Dynamic break point: Done by clicking on STOP button in toolbar ofDone by clicking on STOP button in toolbar of

program.program.

User specific break point.User specific break point. No need to change the code.No need to change the code.

Can be set even when prog. is locked by any user.Can be set even when prog. is locked by any user.

Deleted when logged off the SAP system.Deleted when logged off the SAP system.


10/23

30 dynamic break points can be set without30 dynamic break points can be set without

changing the program code.changing the program code.

Can be set directly in ABAP editor or whileCan be set directly in ABAP editor or while

debugging.debugging.

While debugging, break points can be set orWhile debugging, break points can be set or

deleted by double clicking the line of code.deleted by double clicking the line of code.

OROR


11/23

Different methods of using break pointsDifferent methods of using break points

Break points at ABAP Statements:Break points at ABAP Statements: SelectSelect Breakpoint ->Breakpoint at -> StatementBreakpoint ->Breakpoint at -> Statement


12/23

Break point at Function Modules & SubroutinesBreak point at Function Modules & Subroutines

Similarly, break points can be set for Function Modules, Methods,Similarly, break points can be set for Function Modules, Methods,Exceptions etc.Exceptions etc.


13/23

Saving and Deleting Break pointsSaving and Deleting Break points Dynamic break points can be saved so that they are still active within the same session.Dynamic break points can be saved so that they are still active within the same session.

Break points will remain active until you delete it or you logoff the system.Break points will remain active until you delete it or you logoff the system. Break points can be deleted either by double clicking on the break point or selecting the menuBreak points can be deleted either by double clicking on the break point or selecting the menu

optionoption

Choose->Create/Delete orChoose->Create/Delete or

Choose->Delete allChoose->Delete all


14/23

Watch pointsWatch points

Used to interrupt program, when contents of fieldUsed to interrupt program, when contents of fieldor structure change.or structure change.

Can save up to 5 watch points including watchCan save up to 5 watch points including watch

points for strings.points for strings.

Can be local or globalCan be local or global Local watch points valid only in a specified programLocal watch points valid only in a specified program

Global watch points valid only in a specified programGlobal watch points valid only in a specified program

and all the programs it calls.and all the programs it calls.


15/23

Procedure to set Watch pointsProcedure to set Watch points

Choose menu optionChoose menu option Breakpoint -> Create watchpointBreakpoint -> Create watchpoint

or the corresponding Pushbuttonor the corresponding Pushbutton

OROR

Provide the program name, variable name ,Provide the program name, variable name ,relational operator(=,


16/23

So whenever gd_tcode-tcode becomes KO8G, the program execution will beSo whenever gd_tcode-tcode becomes KO8G, the program execution will beinterrupted.interrupted.


17/23

Debugging ToolsDebugging Tools

Use the following buttons during debugging.Use the following buttons during debugging.

Contents can be displayed by double clicking onContents can be displayed by double clicking on

the field name while debugging.the field name while debugging.

Fields: can be used to get values of single fields.Fields: can be used to get values of single fields.


18/23

Table: can be used to get internal table values.Table: can be used to get internal table values.


19/23

The internal table data , during debugging, canThe internal table data , during debugging, can

be downloaded to excelsheet, by clicking onbe downloaded to excelsheet, by clicking on SaveSave

as excel worksheetas excel worksheetbutton and giving the number ofbutton and giving the number of

rows to be downloadedrows to be downloaded..

Watch points and Break points: can be used toWatch points and Break points: can be used to

display them in the main program.display them in the main program.


20/23

Debugging in BackgroundDebugging in Background

Debugging can be done for programs scheduled to run inDebugging can be done for programs scheduled to run in

background.background.

Job should be either in Scheduled or Released status.Job should be either in Scheduled or Released status.

After scheduling the program to run in background, selectAfter scheduling the program to run in background, select

the job in SM37 and typethe job in SM37 and typejdbgjdbg in the command area.in the command area.

Now the debugger is activated.Now the debugger is activated.


21/23

Running programs (ie jobs with status Active)Running programs (ie jobs with status Active)

can also be debugged.can also be debugged.

GotoGoto SM50SM50to get the list of processes.to get the list of processes. Identify the process related to the program.Identify the process related to the program.

Goto menu optionGoto menu option

Program/Mode->Program->DebuggingProgram/Mode->Program->Debugging SM50 Authorization for monitoring processes areSM50 Authorization for monitoring processes are

needed for this method of debugging.needed for this method of debugging.


22/23

Reference documentsReference documents

SAP Help documentsSAP Help documents

http://www.sappro.com/http://www.sappro.com/

ExperienceExperience
http://www.sappro.com/http://www.sappro.com/http://www.sappro.com/


23/23

QUESTIONS ??QUESTIONS ??

7202741 abap debugging

Documents