11-26-2007 12:40 PM
Hello Experts,
Can any one of you send me how to bebug any program,
Right now i have basic knowledge of bebugging (/h).
If any body has any document regarding this then plz send to my id
mr.abaper@gmail.com
Thanks in advance
sameer
11-26-2007 12:43 PM
3 types update,normal and system debugging
check this for update debugging
If you set "Update Debbugging" you can debug the codes which works in update tusk.
SAP std often runs the routine (function or form) to update the database in update tusk mode, these routine start as soon as a commit work is done.
The commit is called at the end of the program, so you can't debug them by "normal debbugging" because it ends as soon as the program ends
or----
All the database updates are performed by the update work processes by calling the functions/subroutines in update tasks.
These tasks are executed after a commit work is reached in the application. By default you cannot debug these functions.
TO debug these u need to explicitly activate update debugging.
for system debugging check the below link
http://help.sap.com/saphelp_nw2004s/helpdata/en/ef/5f0640555ae369e10000000a155106/content.htm
http://help.sap.com/saphelp_47x200/helpdata/en/c6/617ca9e68c11d2b2ab080009b43351/frameset.htm
For debugging tutorial:
http://help.sap.com/saphelp_erp2005vp/helpdata/en/5a/4ed93f130f9215e10000000a155106/frameset.htm
http://www.sapdevelopment.co.uk/tips/debug/debughome.htm
http://www.sap-basis-abap.com/sapab002.htm
System Debugging
If you set this option, the Debugger is also activated for system programs (programs with status S in their program attributes). When you save breakpoints, the System Debugging setting is also saved.
Update Debugging
Update function modules do not run in the same user session as the program that is currently running in the ABAP Debugger. These function modules are therefore not included in debugging. Only if you select the Update Debugging option can you display and debug them after the COMMIT WORK.
Normal Debugging
Normal debugging is the one we do it by the normal dynamic break points or by /H or by using stattic break points.
You can switch to diffferent debuggin modes while processing.
BREAKPOINT
In the source code we set the Break-point there by clicking the stop button, the system will stop there when you execute the program.
Watchpoint
For watchpoints, we need to give some condition and when this condition is satisfied, program will stop
example : if you want to debug only
for matnr value 100 than set watch point
matnr = 100. when value reaches 100 than
program stops at that point.
more at
http://help.sap.com/saphelp_nw04/helpdata/en/c6/617cdce68c11d2b2ab080009b43351/content.htm
Regards,
Satish
11-26-2007 12:43 PM
hi.
For debugging tutorial:
http://help.sap.com/saphelp_erp2005vp/helpdata/en/5a/4ed93f130f9215e10000000a155106/frameset.htm
http://www.sapdevelopment.co.uk/tips/debug/debughome.htm
http://www.sap-basis-abap.com/sapab002.htm
System Debugging
If you set this option, the Debugger is also activated for system programs (programs with status S in their program attributes). When you save breakpoints, the System Debugging setting is also saved.
Update Debugging
Update function modules do not run in the same user session as the program that is currently running in the ABAP Debugger. These function modules are therefore not included in debugging. Only if you select the Update Debugging option can you display and debug them after the COMMIT WORK.
Normal Debugging
Normal debugging is the one we do it by the normal dynamic break points or by /H or by using stattic break points.
You can switch to diffferent debuggin modes while processing.
BREAKPOINT
In the source code we set the Break-point there by clicking the stop button, the system will stop there when you execute the program.
Watchpoint
For watchpoints, we need to give some condition and when this condition is satisfied, program will stop
example : if you want to debug only
for matnr value 100 than set watch point
matnr = 100. when value reaches 100 than
program stops at that point.
more at
http://help.sap.com/saphelp_nw04/helpdata/en/c6/617cdce68c11d2b2ab080009b43351/content.htm
Reward points if this helps you.
Regards
Shakir
11-26-2007 12:44 PM
Hi
Debugger
Functional Overview
Use
Features
Ways of starting the Debugger
Starting the Debugger
Direct Processing
From the Object Navigator
From the ABAP Editor
From any screen
From any screen
Display Modes Available Using Pushbuttons
Fields
Table
Breakpoints
Watchpoints
Calls
Overview
Settings
Other Display Modes
Single field
Structured
field
Strings
Internal table
Object
Checking System Programs for Errors
Displaying Program Attributes
Restarting the Debugger
Breakpoints
at subroutine
Breakpoint at function module
Breakpoint at method
Breakpoints at system exceptions
Static Breakpoints
Dynamic Breakpoints
Lifetime and Transfer of Breakpoints
Breakpoints at Statements
Prerequisites
Procedure
Result
Breakpoints at Subroutines
Breakpoints at Function Module
Prerequisites
Procedure
Result
Breakpoints at Methods
Prerequisites
Procedure
Result
Breakpoints at System Exceptions
Prerequisites
Procedure
Result
Static Breakpoints
Setting Breakpoints
Deleting Breakpoints
Dynamic Breakpoints
Setting Dynamic Breakpoints in the ABAP Editor
Setting Dynamic Breakpoints in Debugging Mode
Saving Breakpoints
To save the breakpoints that you have set in the Debugger
:You can also delete breakpoints that you have saved:
Managing Dynamic Breakpoints
Example
Functions
Breakpoint Display
Counter
Deleting Breakpoints
Activating and Deactivating Breakpoints
Watchpoints
Use
Features
Setting Watchpoints
Procedure
Greater than or equal
Greater than
You can use the Comparison field option to specify whether the comparison is to be carried out with a value that you specify or with the contents of another field. Depending on your choice from step 6, enter a value or a field for the comparison.
Result
Specifying Logical Links
Changing Watchpoints
Deleting Watchpoints
Memory Monitoring with Watchpoints
Example
Analyzing Source Code
Reward if usefull
To create a logical link between watchpoints:
Choose Goto ® Control debugging ® Watchpoints or the Watchpoints pushbutton to open the watchpoint display.
Set the Logical operator between watchpoints option.
The default value is always OR .
11-26-2007 12:45 PM
Hi
<b>ABAP Debugger</b>
The ABAP Debugger is an integrated test tool within the ABAP Workbench. You use it to check the program logic and to find errors in the source code of an ABAP program. In the Debugger, you can step through the source code of a program. The running program is interrupted after each step, allowing you to check its processing logic and the results of individual statements.
As of Release 6.10, you can also run Business Server Pages (BSP) in the debugging mode. You can also display and set breakpoints here. Business Server Pages can be displayed in the Object Navigator when you select an appropriate application under BSP Application.
Features
The Debugger provides an efficient means of identifying errors in ABAP programs. It contains the following functions:
Ways of starting the Debugger
Choosing different views
Choosing different execution options in the Debugger
Displaying source code in the Debugger
 setting and deleting breakpoints
 setting and deleting watchpoints
 stopping a program at a particular statement or event
Displaying and changing field contents at runtime
Displaying ABAP Objects and references
Displaying and positioning strings
Setting and deleting database locks
Opening the ABAP Editor, or Object Navigator
System settings and runtime warnings
<b>Starting the Debugger</b>
There are two possible strategies for starting the Debugger in the ABAP Workbench:
By setting breakpoints then running the program
By running the program in debugging mode.
Setting Breakpoints
A breakpoint is a signal in a line of code that tells the ABAP runtime processor to interrupt the program at that line and start the ABAP Debugger. A distinction is made between static and dynamic breakpoints. For further information about the different types of breakpoints and how to use them, refer to Breakpoints.
Running a Program in Debugging Mode
You can start the Debugger without previously having set breakpoints. This is the best procedure to use when you want to test a program right from the beginning. It is also useful if you do not know the program very well and therefore are not sure where best to set breakpoints. You can start the Debugger as follows:
From the Object Navigator Select a report or transaction and program and choose Program Test Debugging.
From the ABAP Editor Choose Program  Execute  Debugging (or the Debugging pushbutton).
From any screen Choose System  Utilities  Debug ABAP.
From any screen Enter " /h " in the command field.
Checking System Programs for Errors
To check a program or program component that is part of the ABAP Workbench (for example, the Screen Painter), you must use the system Debugger. To start the system Debugger, choose
System  Utilities  Debug system from any screen. To stop the system Debugger, choose Debugger  Debugging off.
Displaying Program Attributes
You can display the attributes Fixed point arithmetic, System program and Unicode checks active of the program that has just been executed by choosing Goto  Further Information  Program Attributes.
Display Modes in the Debugger
When you are debugging a program, there are various display modes that you can use. All of the display modes have the same structure. The top part of the screen displays an extract of the program source code. The bottom part displays the information specifically available in that display mode. There are also pushbuttons on the screen allowing you to switch to the most frequently-used display modes.
Display Modes Available Using Pushbuttons
Fields The scrollable field display contains the contents of up to eight fields. The contents of the three most important system fields are always displayed. This is the default display mode in the Debugger. See also Processing Fields
Table Displays the contents of an internal table. This mode allows you to display and edit the entries in an internal table. See also Processing Internal Tables
Breakpoints A scrollable display containing up to 30 breakpoints. Next to each breakpoint is a counter. You can also delete breakpoints in this display. See also Managing Dynamic Breakpoints
Watchpoints You can set a watchpoint for a field so that the program is interrupted whenever the value of that field changes. This display mode contains a list of watchpoints, the fields and programs to which they are assigned, the current values of the fields, and the conditions upon which the watchpoint is activated. See also Setting Watchpoints
Calls This mode displays the current sequence of events, and the sequence of calls up to the current breakpoint. The last active call is displayed at the top of the list; previous calls are listed in reverse chronological order. When an event (for example, START-OF-SELECTION) concludes, it is deleted from the display.
Overview This mode displays the structure of the program. It lists its events, subroutines, and modules, and shows which sections belong to which events. It also displays the section currently being processed.
Settings This mode displays the current Debugger settings. You can change the settings by selecting or deselecting various options. For further information, refer to Settings and Warnings
Breakpoints
Instead of starting an ABAP program directly in the Debugger, you can also debug a program by creating one or more breakpoints in the program. A breakpoint is a signal at a particular point in the program that tells the ABAP runtime processor to interrupt processing and start the Debugger. The program runs normally until the breakpoint is reached.
There is also a special kind of breakpoint called a watchpoint. When you use watchpoints, the Debugger is not activated until the contents of a particular field change. For further information, refer to Watchpoints.
Breakpoint Variants
The Debugger contains different breakpoint variants:
Static The BREAK-POINT statement in an ABAP program. Static breakpoints are not normally user-specific. However, you can make them user-specific.
Directly-set
dynamic breakpoints Can be set in the ABAP Editor or the Debugger. Dynamic breakpoints are always user-specific, and are deleted when you log off from the R/3 System.
Breakpoint
at statement The Debugger stops the program directly before the specified statement is executed.
Breakpoint
at subroutine The Debugger stops the program directly before the specified subroutine is called.
Breakpoint at function module The Debugger stops the program directly before the specified function module is called.
Breakpoint at method The Debugger stops the program directly before the specified method is called.
Breakpoints at system exceptions The Debugger stops the program directly after a system exception, that is, after a runtime error has been intercepted.
Use
Static Breakpoints
Static breakpoints are not normally user-specific. Once a user has inserted a BREAK-POINT statement in an ABAP program, the system always interrupts the program at that point. You should only use static breakpoints during the development phase of an application. You should set static breakpoints whenever more than one programmer is working on the same program and you always want to stop the program in the same place.
Dynamic Breakpoints
Dynamic breakpoints are user-specific. You should, therefore, use them when you only want the program to be interrupted when you run it yourself. All dynamic breakpoints are deleted when you log off from the R/3 System.
Dynamic breakpoints are more flexible than static breakpoints, because you can deactivate or delete them at runtime. They have the following advantages:
You do not have to change the program code
You can set them even when the program is locked by another programmer
You can define a counter (for example, only activate the breakpoint after it has been reached five times).
Special Dynamic Breakpoints
Special dynamic breakpoints are useful when you want to interrupt a program directly before a particular ABAP statement, a subroutine, or an event, but do not know exactly where to find it in the program code. Event here is used to refer to the occurrence of a particular statement, for
example, or calling up a method. Special dynamic breakpoints are user-specific. You can only set them in the Debugger.
Transferring Breakpoints to HTTP and Update Sessions
If an HTTP or update session is called from a Logical Unit of Work (LUW), new work processes are started for these new sessions. Breakpoints that were defined beforehand in the calling LUW are copied to these sessions where they can be displayed under breakpoints.
If, for example, the update module func is called via CALL FUNCTION func IN UPDATE TASK, the new work process is displayed in a second window if Update debugging was selected under Settings in the debugging mode. All the breakpoints that were set in the calling LUW can then be processed here.
Static Breakpoints
You should only use static breakpoints during the development phase of an application. You must remove them from your program before you transport it.
Setting Breakpoints
To set a static breakpoint, use the ABAP statement BREAK-POINT . Place the breakpoint in the line at which you want to interrupt the program.
program RSDEBUG_01.
....
if SY-SUBRC <> 0.
break-point.
endif.
....
When you run the program, the runtime processor interrupts it when the breakpoints occur. You can number your breakpoints to make them easier to identify ( BREAK-POINT 1, BREAK-POINT 2 ).
Static breakpoints are not normally user-specific. The program is, therefore, always interrupted as soon as the runtime processor reaches the line containing the breakpoint. The program is interrupted regardless of the user who executes it.
However, you can set user-specific static breakpoints using the BREAK statement followed by your user name. For example, if you use the statement BREAK SMITH , the program is only interrupted when user Smith runs it. Although user-specific breakpoints appear in the program code, they are not active when other users run the program. You should, however, be careful if an application is being used by several users with the same name.
Deleting Breakpoints
Since static breakpoints apply to all users, you must remove them from the program once you have finished testing it. In the ABAP Editor, you can find breakpoints quickly by choosing Utilities  Global search. You can also use the Extended Program Check to find them.
If you do not remove static breakpoints from your program, they will be transported to your production system. This could cause serious problems in the production system.
Dynamic Breakpoints
You can set up to 30 dynamic breakpoints without changing the program code. Dynamic breakpoints can be set either in the ABAP Editor or directly in the Debugger.
Setting Dynamic Breakpoints in the ABAP Editor
You can set dynamic breakpoints in the ABAP Editor regardless of whether you are in display or change mode. You can also set breakpoints directly from within the Debugger at runtime. To set a dynamic breakpoint in the ABAP Editor:
1. Position the cursor on the line of the source code at which you want to set the breakpoint.
2. Choose Utilities  Breakpoints  Set or the Stop icon. The system confirms that the breakpoint has been set.
To display a list of all dynamic breakpoints in a program, choose Utilities  Breakpoints  Display. You can use this list to navigate to a particular breakpoint or to delete one or more breakpoints from the program.
Setting Dynamic Breakpoints in Debugging Mode
To set a dynamic breakpoint in the Debugger:
1. Position the cursor on the line in which you want to set the breakpoint.
2. Select the line by double-clicking it or choosing Breakpoint  Set/delete.
The system sets the breakpoint, and displays a small stop sign to the left of the relevant line. If the line already contained a breakpoint, it is deleted.
When you finish your debugging session, the breakpoint is automatically deleted unless you have explicitly saved it.
Breakpoints at Statements
You can use this special kind of dynamic breakpoint to interrupt a program directly before an ABAP statement is processed.
Prerequisites
You must already be running the program in the Debugger.
Procedure
To set a breakpoint at an ABAP statement:
1. Choose Breakpoint  Breakpoint at  Statement...
2. Enter the ABAP statement.
The system sets a breakpoint at all points in the program at which the ABAP statement occurs.
3. Choose ENTER.
The breakpoint applies to all lines containing the specified statement.
Result
The system confirms the breakpoint and adds it to the list in the display. When you finish your debugging session, the breakpoint is automatically deleted unless you have explicitly saved it.
Breakpoints at Subroutines
You can use this special kind of dynamic breakpoint to interrupt a program directly before a subroutine is called.
Prerequisites
You must already be running the program in the Debugger.
Procedure
To set a breakpoint for a subroutine:
1. Choose Breakpoint  Breakpoint at  Event/Subroutine.
2. Enter the name of the subroutine before which you want to interrupt the program. By default, the Program field contains the name of the program that is currently active. The system sets a breakpoint wherever the specified subroutine occurs in the program code.
3. Choose ENTER.
Result
The system confirms the breakpoint. The breakpoint is added to the breakpoints displayed.
Breakpoints at Function Module
You can use this kind of dynamic breakpoint to interrupt a program directly before a function module is called.
Prerequisites
You must already be running the program in the Debugger.
Procedure
To set a breakpoint for a function module:
1. Choose Breakpoint  Breakpoint at  Function module...
2. Enter the name of the function module before which you want to interrupt the program. The system sets a breakpoint wherever the specified event, module pool, or subroutine occurs in the program code.
3. Choose ENTER.
Result
If you entered a valid function module name, the system confirms that the breakpoint has been set. If the function module exists in the system, the new breakpoint is added to the display list.
Breakpoints at System Exceptions
You can use this special form of dynamic breakpoint to interrupt a program immediately after a runtime error has occurred.
Prerequisites
You must already be running the program in the Debugger.
Procedure
To set a breakpoint at a system exception:
Choose Breakpoint  Breakpoint at  System exception.
Result
The system confirms the breakpoint. The breakpoint is added to the breakpoints displayed.
When a system exception is triggered, a warning triangle appears in the line containing the statement that caused it. If you double-click the warning triangle, the internal name of the runtime error appears.
Saving Breakpoints
If you want to leave the Debugger temporarily, you can save your dynamic breakpoints so that they are still active when you return to the Debugger within the same terminal session.
To save the breakpoints that you have set in the Debugger:
Choose Breakpoint  Save.
The system saves all of the breakpoints that you have set in the current program. These breakpoints will remain active until you either explicitly delete them or log off from the system.
You can also delete breakpoints that you have saved:
By deleting individual breakpoints from the display and then saving again. In this case, only your selected breakpoints will be deleted.
By choosing Breakpoint  Delete all. In this case, the system deletes all dynamic breakpoints.
Managing Dynamic Breakpoints
The ABAP Debugger provides a convenient user interface for managing breakpoints. To open the breakpoint display, choose Breakpoints, or, from the menu, Goto  Control debugging  Breakpoints.
Functions
This display mode contains the following functions for breakpoints:
Breakpoint Display
The scrollable breakpoint display contains up to 30 dynamic breakpoints. For breakpoints that you set directly, the program name and line number at which the breakpoint occurs are displayed. For special breakpoint forms, the list displays the statements, events, subroutines, and module calls at which the relevant breakpoints are set.
Counter
In the breakpoint display, you can specify a counter. When you use a counter, the breakpoint is not activated until it has been reached a specified number of times. For example, if you enter 5 for the counter, the breakpoint is not activated until it is reached for the fifth time. After the breakpoint has been activated, it remains so, and the counter no longer appears in the breakpoint display.
Deleting Breakpoints
Position the cursor on the breakpoint that you want to delete, and either double-click the line or choose Breakpoint  Set/delete. To delete all breakpoints, choose Breakpoint  Delete all.
Activating and Deactivating Breakpoints
Position the cursor on the breakpoint that you want to activate or deactivate and choose Breakpoint  Activate/deactivate.
<b>Watchpoints</b>
Like a breakpoint, a watchpoint is an indicator in a program that tells the ABAP runtime processor to interrupt the program at a particular point. Unlike breakpoints, however, watchpoints are not activated until the contents of a specified field change. Watchpoints, like dynamic breakpoints, are user-specific, and so do not affect other users running the same program. You can only define watchpoints in the Debugger.
Use
You set watchpoints in the Debugger to monitor the contents of specific fields. They inform you when the value of a field changes. When the value changes, the Debugger interrupts the program.
Features
You can set up to five watchpoints in a program.
You can also specify the conditions on which a watchpoint is to become active.
You can specify logical conditions between up to five conditional watchpoints.
You can define watchpoints as either local or global. If you define a global watchpoint, it is active in all called programs. Local watchpoints are only active in the specified program.
You can change and delete watchpoints.
Setting Watchpoints
If you want to interrupt a program when the contents of a field or structure change, use a watchpoint. You can set up to five watchpoints, including watchpoints for strings.
A watchpoint can be either local or global. Local watchpoints are only valid in the specified program. Global watchpoints are valid in the specified program, and also in all the other programs it calls.
Procedure
To set a watchpoint, start the Debugger and proceed as follows:
1. Choose Breakpoint  Create watchpoint or the corresponding pushbutton. The Create Watchpoint dialog box appears.
2. Decide whether you want to set a local or global watchpoint.
3. Enter the program and the name of the field for which you want to set the watchpoint. In the Program field, the name of the program currently running is always defaulted.
4. If you want your watchpoint to be activated each time the contents of the field change, the definition is now complete, and you can return to the Debugger by pressing ENTER .
5. To create a conditional watchpoint, that is only activated when a particular situation arises, choose one of the following relational operators.
Operator Meaning
< Less than
<= Less than or equal
= Equal
<> Not equal
>= Greater than or equal
> Greater than
6.
7. You can use the Comparison field option to specify whether the comparison is to be carried out with a value that you specify or with the contents of another field. Depending on your choice from step 6, enter a value or a field for the comparison.
Result
The system confirms the watchpoint and adds it to the list in the display. When you finish your debugging session, the watchpoint is automatically deleted unless you have explicitly saved it.
Specifying Logical Links
If you have more than one conditional watchpoint, you can specify a logical link between them:
OR Only one of the specified conditions must be met
AND All of the conditions must be met.
To create a logical link between watchpoints:
1. Choose Goto  Control debugging  Watchpoints or the Watchpoints pushbutton to open the watchpoint display.
2. Set the Logical operator between watchpoints option.
The default value is always OR .
Changing Watchpoints
1. Choose Goto  Control debugging  Watchpoints or the Watchpoints pushbutton to display the watchpoint list.
2. Choose the pencil icon in the line containing the watchpoint you want to change.
3. Change the watchpoint attributes in the Create/Change Watchpoint.
3. Choose ENTER .
Deleting Watchpoints
You cannot delete watchpoints by choosing Breakpoint  Delete or Breakpoint  Deactivate/activate. Instead, proceed as follows:
1. Choose Goto  Control debugging  Watchpoints or the Watchpoints pushbutton to display the watchpoint list.
2. Choose the trashcan icon in the line containing the watchpoint you want to delete.
3.
Memory Monitoring with Watchpoints
You can use watchpoints to display changes to the references of strings, data and object references, and internal tables. By placing an ampersand (&) in front of the object name, you can display the reference in question in hexadecimal format. With internal tables, you can also display the table header by placing an asterisk (*) at the beginning of the name.
&objectname Displays the references of strings, internal tables as well as data and object references
*itab Displays the table header of the internal table itab
Analyzing Source Code
The Debugger contains an extensive range of functions that help you to analyze the source code of a program. You can step through the source code of a program in four different ways.
Displaying the Source Code
All of the display modes in the Debugger have the same structure. The top half of the screen displays an extract from the program source code as it appears in the ABAP Editor.
Features
The Source code of field contains an extract from the program, subroutine, or function module currently being processed. The source code display also contains the following additional functions:
Expand/Reduce Program Segment
Use this button to close the information about the current display mode. The system then displays more of the source code.
Use this button to reopen the information for the current display mode.