How To Fix UMG094 - Table &1 is already locked by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: UMG - Message Class for the Unicode Migration Tool.

• Message number: 094

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

What causes this issue?

The target table of the Repair Hint is locked in the SUMG Manual Repair.
Repair Hints must not be executed in parallel to row by row repair.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Unlock the table in the SUMG Manual Repair.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UMG094 - Table &1 is already locked by user &2 ?

  The SAP error message UMG094 indicates that a specific table (denoted as &1) is currently locked by another user (denoted as &2). This typically occurs when a user is performing an operation that requires exclusive access to the table, and another user attempts to access or modify the same table simultaneously.
  Cause:
  
  Concurrent Access: Another user is currently editing or processing data in the specified table, leading to a lock.
  Long-running Transactions: A transaction that takes a long time to complete may hold the lock longer than expected.
  Uncommitted Changes: If a user has made changes to the table but has not yet committed those changes, the lock will persist.
  System Processes: Background jobs or system processes may also lock tables for maintenance or data processing.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to complete their transaction may resolve the issue. You can retry the operation after some time.
  Identify the Lock: Use transaction codes like SM12 (Display and Manage Locks) to identify the user and the transaction that is holding the lock. This can help you understand the situation better.
  Contact the User: If you identify the user holding the lock, you can contact them to see if they can release the lock by completing or rolling back their transaction.
  Release the Lock: If necessary and if you have the appropriate authorizations, you can manually delete the lock entry in SM12. However, this should be done with caution, as it may lead to data inconsistency if the other user is still working on the data.
  Optimize Transactions: If this is a recurring issue, consider optimizing the transactions that access the table to reduce the time locks are held.
  
  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 might indicate underlying issues.
  
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. SAP uses different types of locks (e.g., exclusive locks, shared locks) based on the operation being performed.
  Performance Tuning: If locks are a frequent issue, it may be worth investigating the performance of the transactions and optimizing them to minimize lock duration.
  
  Always ensure that any actions taken to resolve locking issues are in line with your organization's policies and procedures to avoid data integrity issues.