How To Fix AQ_AD_HOC237 - The query is locked by &1

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ_AD_HOC - SAP Query: Ad Hoc Query Messages

• Message number: 237

• Message text: The query is locked by &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AQ_AD_HOC237 - The query is locked by &1 ?

  The SAP error message AQ_AD_HOC237, which states "The query is locked by &1," typically occurs when a query in SAP BW (Business Warehouse) or SAP BI (Business Intelligence) 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.
  Cause:
  
  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 hold the lock for an extended period.
  Session Issues: Sometimes, a session may not release the lock properly due to an error or abrupt termination.
  
  Solution:
  
  Wait and Retry: If the query is locked by another user, the simplest solution is to wait until the other user has finished their work and then try to execute the query again.
  Identify the Locking User: The message indicates which user is holding the lock (represented by &1). You can check with that user to see if they can release the lock.
  Transaction SM12: Use transaction code SM12 to view and manage locks in the system. You can check for the user holding the lock and, if necessary, delete the lock entry (if you have the appropriate permissions).
  Transaction ST22: If the locking is due to a session issue, check transaction ST22 for any dumps that might indicate a problem with the query execution.
  System Administration: If the issue persists, it may require intervention from a system administrator to investigate further, especially if there are recurring locking issues.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting. Locks are typically managed at the database level, and SAP uses various locking mechanisms to ensure data integrity.
  Performance Tuning: If long-running queries are a frequent issue, consider optimizing the queries or the underlying data model to improve performance.
  User Training: Educating users about the implications of running heavy queries during peak times can help reduce locking issues.
  
  If the problem continues after trying these solutions, it may be beneficial to consult SAP support or your internal SAP team for further assistance.