Q. What are lock objects?

ans. The R/3 System synchronizes simultaneous access of several users to the same data records with a lock mechanism. When interactive transactions are programmed, locks are set and released by calling function modules (see Function Modules for Lock ReQuests). These function modules are automatically generated from the definition of lock objects in the ABAP Dictionary.

What are the events?

Initialization, At selection-screen,Start-of-selection,end-of-selection,top-of-page,end-of-page, At line-selection, At user-command,At PF,Get,At New,At LAST,AT END, AT FIRST.

What are the interactive events?

ABAP/4 provides some interactive events on lists such as AT LINE-SELECTION (double click) or AT USER-COMMAND (pressing a button). You can use these events to move through layers of information about individual items in a list.

 

Q.  What is runtime analysis?
ans.  This runtime analysis tools allows the ABAP/4 programmer to trace the tables used by the SAP dialog/reports programs.  In the Analyze button, you can see four more buttons like:-

Hit List  - Displays the execution time of each statement in the program.
Tables  - Displays the tables accessed during run time.
Group hit list  - Displays the execution time of all the statements and grouping them based on the type of command.  e.g. performs, SQL and internal tables used.
Hirarchy - Displays the execution time of each statement in the actual order in which were executed.  Uses indentation to indicate the level of nesting of statements within subroutines.

Any tables use by the transaction or program can be easily trace with the runtime analysis tools.
Go to transaction SE30
Type in the transaction code you want to analyze. What are lock objects?

The R/3 System synchronizes simultaneous access of several users to the same data records with a lock mechanism. When interactive transactions are programmed, locks are set and released by calling function modules (see Function Modules for Lock ReQuests). These function modules are automatically generated from the definition of lock objects in the ABAP Dictionary

A D V E R T I S E M E N T

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