How To Fix CX_WDK_CONTROLLER208 - Read lock for object &1 &2 lost due to changes by user &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CX_WDK_CONTROLLER - FP/BE/BDC Controller Messages

• Message number: 208

• Message text: Read lock for object &1 &2 lost due to changes by user &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CX_WDK_CONTROLLER208 - Read lock for object &1 &2 lost due to changes by user &3 ?

  The SAP error message CX_WDK_CONTROLLER208 indicates that a read lock for a specific object has been lost due to changes made by another user. This typically occurs in scenarios where multiple users are trying to access or modify the same data simultaneously, leading to a conflict in the locking mechanism.
  Cause:
  
  Concurrent Access: The primary cause of this error is concurrent access to the same object by multiple users. When one user reads or modifies an object, a lock is placed on it. If another user tries to read or modify the same object while the lock is active, they may encounter this error if the first user makes changes that release the lock.
  Session Timeout: If a user’s session times out or is terminated unexpectedly, it can lead to the loss of the read lock.
  Database Changes: Changes made to the database outside of the current session (e.g., through background jobs or other transactions) can also lead to this error.
  
  Solution:
  
  Retry the Operation: The simplest solution is to retry the operation after a brief pause. This allows the system to re-establish the lock if the conflicting changes have been resolved.
  Check for Concurrent Users: Identify if other users are accessing the same object. If possible, coordinate with them to avoid simultaneous modifications.
  Review Lock Entries: Use transaction codes like SM12 to check for existing locks on the object. This can help identify if another user is holding a lock that is causing the conflict.
  Session Management: Ensure that user sessions are managed properly to avoid timeouts. Users should save their work frequently to minimize the risk of losing locks.
  Error Handling in Code: If you are developing custom applications, implement error handling to catch this exception and provide a user-friendly message or automatic retry logic.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks is crucial. SAP uses a locking mechanism to prevent data inconsistencies. Familiarize yourself with the concepts of exclusive and shared locks.
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To analyze dumps that may provide more context on the error.
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. Sometimes, there may be known issues with specific versions of SAP that have been addressed in later updates.
  
  By following these steps, you should be able to address the CX_WDK_CONTROLLER208 error effectively.