How To Fix UR474 - Undo is still running - clean-up cannot be performed yet

SAP Error Message - Details

• Message type: E = Error

• Message class: UR -

• Message number: 474

• Message text: Undo is still running - clean-up cannot be performed yet

Self-Explanatory Message

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• What is the cause and solution for SAP error message UR474 - Undo is still running - clean-up cannot be performed yet ?

  The SAP error message UR474 "Undo is still running - clean-up cannot be performed yet" typically occurs in the context of database operations, particularly when dealing with database transactions that involve undo operations. This message indicates that a previous undo operation is still in progress, and therefore, the system cannot perform a clean-up operation until that undo process is completed.
  Cause:
  
  
  Long-running Undo Operations: The most common cause of this error is that a previous transaction that requires an undo operation is taking longer than expected to complete. This can happen due to various reasons, such as:
  
  High system load or resource contention.
  Large volumes of data being processed.
  Locks held by other transactions that are preventing the undo operation from completing.
  
  
  
  Database Locking Issues: If there are locks on the database that prevent the undo operation from completing, this can lead to the error message.
  
  
  System Configuration: In some cases, the configuration of the database or the SAP system may not be optimized for the workload, leading to delays in transaction processing.
  
  
  Solution:
  
  
  Wait for Completion: The simplest solution is to wait for the undo operation to complete. Monitor the system to see if the operation finishes on its own.
  
  
  Check for Locks: Use transaction codes like SM12 (to check for locks) and SM21 (to check the system log) to identify if there are any locks or issues that are causing the undo operation to hang.
  
  
  Analyze Performance: Use transaction ST22 to check for dumps and SM37 to monitor job statuses. This can help identify if there are performance issues or long-running jobs that are affecting the undo operation.
  
  
  Database Administration: If the issue persists, it may require intervention from a database administrator to analyze the database performance, check for long-running transactions, and optimize the database settings.
  
  
  System Restart: In extreme cases, if the system is unresponsive and the undo operation does not complete, a system restart may be necessary. However, this should be done with caution and typically as a last resort.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12, SM21, ST22, and SM37 for monitoring and troubleshooting.
  Performance Monitoring: Regularly monitor system performance and database health to prevent such issues from occurring in the future.
  Documentation: Refer to SAP documentation and community forums for additional insights and user experiences related to this error.
  
  If the problem continues after trying the above solutions, it may be beneficial to contact SAP support for further assistance.