How To Fix AD349 - Table & is locked by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 349

• Message text: Table & is locked by user &

What causes this issue?

The table is currently being edited by the specified user. For reasons
of consistency, it is locked against editing by other users.

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?

You cannot edit the table until the specified user has finished working
on the table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD349 - Table & is locked by user & ?

  The SAP error message AD349 indicates that a specific table is locked by a user. This typically occurs when a user is performing an operation that requires exclusive access to a table, and another user or process is currently holding a lock on that table. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  User Lock: A user is currently editing or processing data in the table, which prevents other users from accessing it.
  Long-Running Transactions: A transaction that takes a long time to complete can hold locks longer than expected.
  Deadlocks: In some cases, two or more transactions may be waiting for each other to release locks, causing a deadlock situation.
  Background Jobs: A background job may be running that is accessing the table and holding a lock.
  
  Solution:
  
  
  Identify the Locking User:
  
  Use transaction code SM12 to view the list of locks. You can filter by the table name or user to identify who is holding the lock.
  
  
  
  Release the Lock:
  
  If the locking user is identified and it is safe to do so, you can manually delete the lock from SM12. However, this should be done with caution, as it may lead to data inconsistency if the user is in the middle of a transaction.
  
  
  
  Communicate with the User:
  
  If possible, communicate with the user who is holding the lock to understand if they can complete their transaction or release the lock.
  
  
  
  Check for Background Jobs:
  
  Use transaction code SM37 to check for any background jobs that might be holding locks on the table. If a job is running longer than expected, you may need to investigate or terminate it if appropriate.
  
  
  
  Review Transaction Logic:
  
  If this is a recurring issue, review the logic of the transactions that access the table to ensure they are optimized and not holding locks longer than necessary.
  
  
  
  Increase Lock Timeout:
  
  In some cases, you may consider increasing the lock timeout settings in the SAP system, but this should be done with caution and typically as a last resort.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM37: Monitor background jobs.
  SM21: Check system logs for any related errors or warnings.
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking behavior in specific versions of SAP.
  
  
  Documentation: Review SAP documentation on database locking mechanisms and best practices for managing locks.
  
  
  Important Considerations:
  
  Always ensure that you have the necessary permissions and that you understand the implications of releasing locks or terminating jobs.
  It is advisable to consult with your SAP Basis team or system administrator if you are unsure about how to proceed with resolving locking issues.