How To Fix S_UNIFIED_CON019 - Rejected lock object is &1. Conflict with user &2 detected

SAP Error Message - Details

• Message type: E = Error

• Message class: S_UNIFIED_CON - Message Class for Unified Connectivity

• Message number: 019

• Message text: Rejected lock object is &1. Conflict with user &2 detected

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message S_UNIFIED_CON019 - Rejected lock object is &1. Conflict with user &2 detected ?

  The SAP error message S_UNIFIED_CON019 indicates that there is a conflict with a lock object in the SAP system. Specifically, it means that a lock request was rejected because another user is currently holding a lock on the same object. This can happen in scenarios where multiple users or processes are trying to access or modify the same data simultaneously.
  Cause:
  The error occurs due to the following reasons:
  
  Lock Conflict: Another user or process has already locked the object you are trying to access. This can happen in scenarios where multiple transactions are trying to update the same data.
  Long-running Transactions: If a transaction takes a long time to complete, it can hold locks for an extended period, leading to conflicts with other users.
  Improper Lock Management: If the application does not manage locks properly, it can lead to situations where locks are not released in a timely manner.
  
  Solution:
  To resolve the S_UNIFIED_CON019 error, you can take the following steps:
  
  
  Identify the Lock:
  
  Use transaction code SM12 to view the list of active locks in the system. You can filter by the lock object name and the user who is holding the lock.
  Check which user or process is holding the lock on the object in question.
  
  
  
  Release the Lock:
  
  If the lock is held by a user who is no longer active or if the transaction has failed, you may need to manually delete the lock entry from SM12. However, be cautious when doing this, as it may lead to data inconsistencies if the transaction is still in progress.
  
  
  
  Communicate with Users:
  
  If the lock is held by another user, communicate with them to understand if they can release the lock or if they are still working on the transaction.
  
  
  
  Optimize Transactions:
  
  Review the transactions that are causing lock conflicts. Optimize them to reduce the time they hold locks, or implement better lock management strategies.
  
  
  
  Check for Deadlocks:
  
  In some cases, deadlocks can occur, where two or more transactions are waiting for each other to release locks. Monitor and analyze the system for potential deadlocks.
  
  
  
  Review Application Logic:
  
  If the issue persists, review the application logic to ensure that locks are being acquired and released appropriately.
  
  
  
  Related Information:
  
  Lock Objects: In SAP, lock objects are used to manage concurrent access to data. They ensure data integrity by preventing multiple users from modifying the same data simultaneously.
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM21: Check system logs for any related errors or warnings.
  ST22: Analyze dumps that may provide insights into the issue.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to lock management and the specific error message.
  
  By following these steps, you should be able to diagnose and resolve the S_UNIFIED_CON019 error effectively.