How To Fix DS394 - Query & is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: DS - Messages for Editing Text Elements in ABAP Programs

• Message number: 394

• Message text: Query & is locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DS394 - Query & is locked ?

  The SAP error message DS394, which states "Query & is locked," typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when a query is being accessed or modified by another user or process. This locking mechanism is in place to prevent data inconsistencies and ensure that users do not interfere with each other's work.
  Causes:
  
  Concurrent Access: Another user or process is currently executing or modifying the same query.
  Long-Running Queries: A query that takes a long time to execute may lock the query for an extended period.
  Transaction Locks: If a transaction is not properly closed or if there are issues with the database, it may lead to locks.
  Development Activities: If a query is being modified in the Query Designer or if there are changes being made to the underlying data model, it may cause the query to be locked.
  
  Solutions:
  
  Wait and Retry: If the query is locked due to another user, wait for a few moments and try running the query again.
  Identify the Locking User: Use transaction codes like SM12 (for lock entries) to identify which user or process is holding the lock. You can then communicate with that user to resolve the issue.
  Release Locks: If you have the necessary authorizations, you can manually release the locks using transaction SM12. Be cautious with this approach, as it may disrupt other users.
  Check for Long-Running Queries: If a query is taking too long, investigate the performance and optimize it if necessary. You can use transaction ST22 to check for dumps or SM37 to monitor job statuses.
  Review Development Changes: If changes were made to the query or underlying data model, ensure that they are completed and saved properly. Avoid making changes while users are actively using the query.
  System Restart: In extreme cases, if the locking issue persists and cannot be resolved, a system restart may be necessary, but this should be done with caution and typically as a last resort.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM37 (to monitor jobs), and ST22 (to check for dumps).
  User Communication: If you are in a collaborative environment, communicate with your team members to coordinate query usage and avoid conflicts.
  Performance Tuning: Regularly review and optimize queries to ensure they run efficiently and do not hold locks for extended periods.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or technical support for further assistance.