SAP ABAP Data Element CLASSSPO (Object class for lock objects)
Hierarchy
☛ SAP_BASIS (Software Component) SAP Basis Component
   ⤷ BC-DWB-DIC-AC (Application Component) Activation Program, Conversion Program, DB Utility, MC, SPDD
     ⤷ SDIC (Package) ABAP Dictionary
Basic Data
Data Element CLASSSPO
Short Description Object class for lock objects  
Data Type
Category of Dictionary Type D   Domain
Type of Object Referenced     No Information
Domain / Name of Reference Type DYNPCHOICE    
Data Type CHAR   Character String 
Length 1    
Decimal Places 0    
Output Length 1    
Value Table      
Further Characteristics
Search Help: Name    
Search Help: Parameters    
Parameter ID   
Default Component name    
Change document    
No Input History    
Basic direction is set to LTR    
No BIDI Filtering    
Field Label
  Length  Field Label  
Short 10 Lock obj. 
Medium 18 Lock objects 
Long 18 Lock objects 
Heading 0   
Documentation

Definition

A lock object is a virtual link of several SAP tables which is used to synchronize simultaneous access by two users to the same set of data (SAP lock concept).

Locks are requested and released in the programming of online transactions by calling certain function modules which are automatically generated from the definition of the lock objects. These lock objects must be explicitly created in the ABAP Dictionary.

To set locks, you must perform the following steps:

  1. You must define a lock object in the ABAP Dictionary. The name of the lock object should begin with E.
  2. The function modules for requesting and releasing locks which are created automatically when the lock object is activated must be linked to the programming of the relevant online transactions.

Supplementary Documentation - CLASSSPO 0001

Use

You can maintain the assignment of lock objects to Dictionary authorization groups.

This allows you to restrict authorization for Dictionary maintenance of individual lock objects to a specific group of users/developers.

Procedure

  1. Mark with a cross, select object from the menu or press PF2.
  2. Generic entry of the object name and/or authorization group.
  3. Select PF key maintenance.
  4. Enter the authorization group in the relevant field.
  5. Save and press PF3 Back.
  6. Check authorization by carrying out a maintenance test.

Dependencies

You require authorization to maintain the associated tables TDDAx. If you do not have this authorization, the system branches automatically to display mode. There is also a lock function that prevents parallel assignment of authorization classes and Dictionary maintenance of the same objects. If this function is in place, only display mode is possible.

You can only enter allowed authorization groups. These are maintained under menu point Permitted_groups.

Examples

History
Last changed by/on SAP  19950209 
SAP Release Created in