How To Fix GD291 - Log cannot be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: GD - EDT: External data transfer

• Message number: 291

• Message text: Log cannot be locked

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 GD291 - Log cannot be locked ?

  The SAP error message GD291, which states "Log cannot be locked," typically occurs when there is an issue with the system's ability to lock a log file that is required for certain operations, such as during the execution of a transaction or when trying to perform a specific action in the system. This error can arise due to various reasons, including:
  Causes:
  
  Concurrent Access: Another user or process may already be accessing the log, preventing your transaction from obtaining the necessary lock.
  System Performance Issues: High system load or performance issues can lead to delays in acquiring locks.
  Database Locking Issues: There may be issues at the database level, such as deadlocks or long-running transactions that hold locks longer than expected.
  Configuration Issues: Incorrect configuration settings in the SAP system or database can lead to locking problems.
  Transport Issues: If the error occurs during a transport operation, it may be related to the transport directory or transport management system.
  
  Solutions:
  
  Check for Active Sessions: Use transaction codes like SM12 (to check for locks) and SM21 (to check system logs) to identify if there are any active sessions that are holding locks on the log.
  Wait and Retry: If the issue is due to concurrent access, waiting for a short period and then retrying the operation may resolve the issue.
  System Performance Monitoring: Monitor system performance and check for any long-running processes that may be causing delays in lock acquisition.
  Database Administration: If the issue persists, consult with your database administrator to check for any locking issues at the database level.
  Review Configuration: Ensure that the SAP system and database configurations are set correctly and are optimized for performance.
  Transport Management: If the error occurs during a transport operation, check the transport directory and ensure that there are no issues with the transport management system.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks), SM21 (to view system logs), and ST22 (to check for dumps).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  System Logs: Review system logs for any additional error messages or warnings that may provide context for the GD291 error.
  
  If the problem persists after trying the above solutions, it may be necessary to escalate the issue to your SAP Basis team or SAP support for further investigation.