How To Fix /PM0/3FB_MESSAGES091 - DB lock could not be released

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/3FB_MESSAGES -

• Message number: 091

• Message text: DB lock could not be released

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 /PM0/3FB_MESSAGES091 - DB lock could not be released ?

  The SAP error message /PM0/3FB_MESSAGES091 DB lock could not be released typically indicates that there is a database lock that could not be released, which can occur for various reasons. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold onto locks longer than expected, preventing other transactions from accessing the same data.
  Deadlocks: Two or more transactions may be waiting for each other to release locks, resulting in a deadlock situation.
  Database Issues: There may be issues with the database itself, such as corruption or misconfiguration, that prevent locks from being released.
  Application Errors: Bugs or errors in the application code can lead to locks not being released properly.
  User Session Issues: If a user session is terminated unexpectedly, it may leave locks in place.
  
  Solutions:
  
  Identify and Terminate Long-Running Transactions: Use transaction codes like SM12 (to view and manage locks) and SM21 (to check the system log) to identify any long-running transactions and terminate them if necessary.
  Check for Deadlocks: Use transaction SM21 to analyze the system log for deadlock situations. You may need to adjust the application logic to avoid deadlocks.
  Database Administration: Work with your database administrator to check for any database issues. This may include running consistency checks or optimizing database performance.
  Review Application Code: If the issue is related to application logic, review the code to ensure that locks are being managed properly and released in a timely manner.
  Session Management: Ensure that user sessions are being managed properly and that there are no unexpected terminations that could leave locks in place.
  Restart the Application Server: In some cases, restarting the application server may help to clear any lingering locks.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and delete locks.
  SM21: To view the system log for errors and warnings.
  ST22: To check for dumps that may provide more context on the error.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Monitoring Tools: Utilize SAP monitoring tools to keep an eye on system performance and lock situations to prevent future occurrences.
  
  Preventive Measures:
  
  Regularly monitor system performance and lock situations.
  Optimize long-running transactions and ensure they are designed to complete quickly.
  Implement proper error handling in application code to ensure locks are released even in case of failures.
  
  If the issue persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.