How To Fix SG026 - Table & is locked by a user

SAP Error Message - Details

• Message type: E = Error

• Message class: SG - Global Pool for Cross-Application Developments

• Message number: 026

• Message text: Table & is locked by a user

What causes this issue?

You wanted to make an entry in the table TCURF (exchange rate factors),
but the table is being used by another user.

System Response

Error message

How to fix this error?

You can only make this entry when the table is unlocked.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SG026 - Table & is locked by a user ?

  The SAP error message SG026 indicates that a specific table is locked by a user, which prevents other users from accessing or modifying the data in that table. This can occur in various scenarios, such as during data entry, batch processing, or when a transaction is being executed.
  Cause:
  
  User Lock: A user is currently accessing the table, and the system has placed a lock on it to prevent concurrent modifications that could lead to data inconsistencies.
  Long-Running Transactions: A transaction that takes a long time to complete may hold a lock on the table for an extended period.
  Uncommitted Changes: If a user has made changes to the data but has not yet committed those changes, the table remains locked.
  System Errors: Sometimes, system errors or crashes can leave a table in a locked state.
  
  Solution:
  
  
  Identify the Lock:
  
  Use transaction code SM12 to view the list of locks in the system. You can filter by the table name or user ID to find the specific lock.
  
  
  
  Release the Lock:
  
  If you have the necessary authorizations, you can manually release the lock from the SM12 transaction. Be cautious when doing this, as it may lead to data loss if the user is in the middle of a transaction.
  
  
  
  Contact the User:
  
  If possible, contact the user who has locked the table to determine if they can complete their transaction or release the lock themselves.
  
  
  
  Check for Long-Running Transactions:
  
  Investigate if there are any long-running transactions that may be causing the lock. You can use transaction SM66 to monitor active processes in the system.
  
  
  
  System Restart:
  
  In extreme cases, if the lock cannot be released and is causing significant issues, a system restart may be necessary. This should be done with caution and typically as a last resort.
  
  
  
  Related Information:
  
  Lock Types: Understand the difference between exclusive locks (which prevent all other access) and shared locks (which allow read access but prevent writes).
  Lock Timeout: SAP has a lock timeout setting that can be configured. If a lock is held for too long, the system may automatically release it after a specified timeout period.
  Performance Monitoring: Regularly monitor system performance and lock situations to prevent issues from arising in the future.
  User Training: Ensure that users are trained on proper transaction handling to minimize the occurrence of locks.
  
  By following these steps, you should be able to resolve the SG026 error and manage table locks effectively in SAP.