How To Fix 5A667 - Lock table is full

SAP Error Message - Details

• Message type: E = Error

• Message class: 5A - Basis Personnel Management

• Message number: 667

• Message text: Lock table is full

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 5A667 - Lock table is full ?

  The SAP error message 5A667: Lock table is full indicates that the system has reached the maximum limit of locks that can be held in the lock table. This can occur in environments with high concurrency where many users or processes are trying to access the same data simultaneously.
  Causes:
  
  High Concurrency: A large number of users or processes are trying to access and lock the same data objects.
  Long-Running Transactions: Transactions that hold locks for an extended period can contribute to filling the lock table.
  Insufficient Lock Table Size: The configuration of the lock table may not be adequate for the workload.
  Lock Leaks: Locks that are not released properly due to programming errors or system issues can lead to the lock table filling up.
  
  Solutions:
  
  
  Increase Lock Table Size:
  
  You can increase the size of the lock table by adjusting the profile parameters in the SAP system. The relevant parameter is enque/table_size. This can be done through transaction RZ10 or RZ11.
  After changing the parameter, you may need to restart the SAP system for the changes to take effect.
  
  
  
  Optimize Transactions:
  
  Review and optimize long-running transactions to ensure that they do not hold locks longer than necessary.
  Implement proper error handling to ensure that locks are released even in case of failures.
  
  
  
  Monitor Lock Usage:
  
  Use transaction SM12 to monitor and analyze the locks currently held in the system. This can help identify any locks that are not being released.
  Identify and resolve any lock contention issues that may be causing excessive locking.
  
  
  
  Review Application Logic:
  
  Check the application logic for any potential lock leaks or unnecessary locking. Ensure that locks are acquired and released appropriately.
  
  
  
  System Performance Tuning:
  
  Consider tuning the overall performance of the SAP system to reduce the load and improve response times, which can help reduce the number of concurrent locks.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  RZ10: Maintain profile parameters.
  RZ11: Display and change profile parameters dynamically.
  
  
  
  SAP Notes: Check SAP Notes related to lock management and performance tuning for specific recommendations and best practices.
  
  
  Documentation: Refer to the SAP Help Portal for detailed information on lock management and configuration.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the "Lock table is full" error in your SAP environment.