How To Fix ESH_RUBU_MSG001 - Runtime Buffer is locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_RUBU_MSG - ESH RuBu - Messages

• Message number: 001

• Message text: Runtime Buffer is locked by user &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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_RUBU_MSG001 - Runtime Buffer is locked by user &1 ?

  The SAP error message ESH_RUBU_MSG001 indicates that a runtime buffer is locked by a specific user. This typically occurs in the context of the SAP Enterprise Search (ESS) or SAP NetWeaver Search, where the runtime buffer is used to store temporary data for search operations.
  Cause:
  The error is caused by one of the following reasons:
  
  Concurrent Access: Another user or process is currently accessing or modifying the runtime buffer, which leads to a lock being placed on it.
  Long-Running Transactions: A transaction that takes a long time to complete may hold the lock longer than expected, preventing other users from accessing the buffer.
  System Configuration: There may be configuration issues or bugs in the system that lead to improper handling of locks.
  
  Solution:
  To resolve the issue, you can try the following steps:
  
  
  Identify the Locking User: Use transaction code SM12 to check for locks in the system. Look for the user mentioned in the error message and see what transactions they are running.
  
  
  Wait for Completion: If the locking user is performing a legitimate operation, it may be best to wait until they complete their task.
  
  
  Terminate the Lock: If the locking process is stuck or taking too long, you may need to terminate it. This can be done in transaction SM12 by selecting the lock entry and choosing to delete it. Be cautious with this approach, as it may lead to data inconsistencies if the user is in the middle of a critical operation.
  
  
  Check for System Performance: Ensure that the system is performing optimally. Long-running transactions may be a sign of performance issues that need to be addressed.
  
  
  Review Configuration: Check the configuration settings related to the runtime buffer and locks. Ensure that they are set up correctly and that there are no known issues with the current version of your SAP system.
  
  
  Consult SAP Notes: Look for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  
  
  Contact SAP Support: If the problem persists and you cannot identify the cause, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to help diagnose issues.
  Performance Monitoring: Use tools like ST03N (Workload Analysis) to monitor system performance and identify any bottlenecks.
  User Management: Ensure that user roles and permissions are correctly set up to prevent unauthorized access to critical transactions that may lead to locking issues.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the runtime buffer lock in SAP.