How To Fix /ISDFPS/WM01256 - Table &1 is currently locked by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/WM01 -

• Message number: 256

• Message text: Table &1 is currently locked by user &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/WM01256 - Table &1 is currently locked by user &2 ?

  The SAP error message /ISDFPS/WM01256 Table &1 is currently locked by user &2 indicates that a specific table (denoted by &1) is currently locked by another user (denoted by &2). This typically occurs in scenarios where multiple users or processes are trying to access or modify the same data simultaneously, leading to a lock situation to maintain data integrity.
  Cause:
  
  Concurrent Access: Another user or process is currently accessing or modifying the table, which prevents other users from making changes until the lock is released.
  Long-running Transactions: A transaction that takes a long time to complete may hold a lock on the table longer than expected.
  Uncommitted Changes: If a user has made changes to the table but has not yet committed those changes, the table remains locked.
  Deadlocks: In some cases, a deadlock situation may occur where two or more processes are waiting for each other to release locks.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue.
  Identify the Locking User: Use transaction codes like SM12 (for lock entries) to identify the user and the specific lock. This can help you understand who is holding the lock and why.
  Contact the Locking User: If possible, communicate with the user who is holding the lock to see if they can release it or complete their transaction.
  Release the Lock: If the locking user is not available and the lock is causing significant issues, an administrator can manually delete the lock entry in SM12. However, this should be done with caution, as it may lead to data inconsistency.
  Optimize Transactions: Review and optimize long-running transactions to minimize the time locks are held.
  Check for Deadlocks: If deadlocks are suspected, analyze the processes involved and adjust them to prevent such situations.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that may indicate underlying problems.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific error message.
  Performance Monitoring: Use tools like ST03N to monitor performance and identify long-running transactions that may be causing locks.
  
  Always ensure that any actions taken to resolve locking issues are in line with your organization's policies and procedures, especially when it comes to manually releasing locks.