How To Fix /BDL/D-065 - Lock table overflow

SAP Error Message - Details

• Message type: E = Error

• Message class: /BDL/D- -

• Message number: 065

• Message text: Lock table overflow

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /BDL/D-065 - Lock table overflow ?

  The SAP error message /BDL/D-065 Lock table overflow indicates that the lock table in the SAP system has reached its maximum capacity. This can happen when there are too many locks being held in the system, which can occur due to various reasons such as long-running transactions, improper handling of locks, or a high volume of concurrent users.
  Causes:
  
  High Volume of Concurrent Users: A large number of users trying to access and modify data simultaneously can lead to an overflow of the lock table.
  Long-Running Transactions: Transactions that take a long time to complete can hold locks for extended periods, preventing other transactions from acquiring necessary locks.
  Inefficient Lock Management: Poorly designed programs or processes that do not release locks properly can contribute to the overflow.
  Configuration Limits: The default configuration for the lock table size may be insufficient for the workload of the system.
  
  Solutions:
  
  
  Increase Lock Table Size:
  
  You can increase the size of the lock table by adjusting the parameter enque/table_size in the instance profile. This requires a restart of the SAP instance to take effect.
  To do this, go to transaction RZ10, select the appropriate profile, and modify the parameter.
  
  
  
  Analyze and Optimize Transactions:
  
  Review long-running transactions and optimize them to reduce the time locks are held.
  Ensure that transactions are designed to release locks as soon as they are no longer needed.
  
  
  
  Monitor Lock Usage:
  
  Use transaction SM12 to monitor and analyze lock entries. Identify and resolve any unnecessary locks.
  Check for any orphaned locks that may need to be manually released.
  
  
  
  Implement Lock Management Best Practices:
  
  Ensure that your ABAP programs and custom developments follow best practices for lock management.
  Avoid locking large numbers of records or locking records for extended periods.
  
  
  
  Regular Maintenance:
  
  Regularly monitor the system for lock table usage and adjust configurations as necessary.
  Consider implementing alerts for lock table usage to proactively manage potential issues.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  RZ10: To change instance profile parameters.
  SM21: To check system logs for related errors or warnings.
  
  
  
  SAP Notes: Check SAP Notes related to lock management and performance tuning for specific recommendations and updates.
  
  
  Documentation: Refer to SAP documentation on lock management and performance tuning for more detailed guidance.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the /BDL/D-065 Lock table overflow error in your SAP system.