How To Fix IBW028 - Operation on simulation tables is locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: IBW - Messages for PM extraction

• Message number: 028

• Message text: Operation on simulation tables is locked by user &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IBW028 - Operation on simulation tables is locked by user &1 ?

  The SAP error message IBW028 indicates that an operation on simulation tables is locked by a specific user. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when a user is trying to perform an operation that requires access to simulation tables, but another user has locked those tables for their own operations.
  Cause:
  
  User Lock: Another user is currently performing an operation that involves the simulation tables, which prevents other users from accessing them simultaneously.
  Long-Running Transactions: A transaction that takes a long time to complete may hold the lock for an extended period.
  System Configuration: Certain configurations or settings in the SAP BW system may lead to locks being held longer than necessary.
  
  Solution:
  
  Identify the Locking User: Check the user ID mentioned in the error message (represented by &1). You can use transaction SM12 to view and manage locks in the system.
  Contact the User: If possible, contact the user who is holding the lock to determine if they can complete their operation or release the lock.
  Wait for Completion: If the operation is legitimate and cannot be interrupted, you may need to wait until the user completes their task.
  Force Release the Lock: If the locking user is not available and the lock is causing significant issues, a system administrator can forcefully release the lock using transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies.
  Review System Performance: If locks are a frequent issue, consider reviewing system performance and transaction handling to optimize operations and reduce lock contention.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that might indicate underlying problems.
  
  
  Documentation: Refer to SAP Help documentation for more details on locking mechanisms and best practices in SAP BW.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to locking in your version of SAP BW.
  
  If the problem persists or if you encounter frequent locking issues, it may be beneficial to consult with your SAP Basis team or SAP support for further investigation and resolution.