How To Fix 5A062 - Global lock table is full, so record locking is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: 5A - Basis Personnel Management

• Message number: 062

• Message text: Global lock table is full, so record locking is not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 5A062 - Global lock table is full, so record locking is not possible ?

  The SAP error message 5A062 indicates that the global lock table is full, which prevents record locking from occurring. This can lead to issues with data consistency and integrity, as multiple users or processes may attempt to access the same data simultaneously without proper locking mechanisms in place.
  Cause:
  The error typically arises due to one or more of the following reasons:
  
  High Concurrency: A large number of users or processes are trying to access and lock records simultaneously, leading to the exhaustion of available locks in the global lock table.
  Configuration Limits: The configuration settings for the global lock table may be set too low for the current workload.
  Long-Running Transactions: Transactions that hold locks for an extended period can contribute to the lock table filling up.
  Inefficient Lock Management: Poorly designed applications or processes that do not release locks promptly can lead to lock table saturation.
  
  Solution:
  To resolve the issue, consider the following steps:
  
  
  Increase Lock Table Size:
  
  You can increase the size of the global lock table by adjusting the parameter enque/table_size in the SAP system profile. This requires a restart of the SAP instance to take effect.
  Use transaction RZ10 to modify the instance profile and increase the value of enque/table_size.
  
  
  
  Monitor and Optimize Lock Usage:
  
  Use transaction SM12 to monitor and analyze lock entries. Identify long-held locks and investigate the processes holding them.
  Encourage users to release locks promptly and avoid long-running transactions when possible.
  
  
  
  Review Application Logic:
  
  Analyze the application logic to ensure that locks are acquired and released efficiently. Avoid unnecessary locking and ensure that locks are released as soon as they are no longer needed.
  
  
  
  Check for Deadlocks:
  
  Investigate if there are any deadlocks occurring in the system that might be contributing to the lock table being filled. Use transaction SM21 to check the system log for any deadlock messages.
  
  
  
  System Performance Tuning:
  
  Review overall system performance and tuning parameters. Sometimes, performance issues can lead to increased lock contention.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to this issue.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM21: View system log for errors and warnings.
  RZ10: Change instance profile parameters.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on lock management and configuration.
  
  
  Performance Monitoring Tools: Utilize tools like SAP Solution Manager or other performance monitoring tools to analyze system performance and lock contention.
  
  
  By following these steps, you should be able to address the error message 5A062 and improve the locking mechanism in your SAP environment.