How To Fix L1100 - This function is currently not available (lock table full)

SAP Error Message - Details

• Message type: E = Error

• Message class: L1 - Message handling for WM master data

• Message number: 100

• Message text: This function is currently not available (lock table 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 L1100 - This function is currently not available (lock table full) ?

  The SAP error message L1100 ("This function is currently not available (lock table full)") typically 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 by users or processes, preventing new locks from being created.
  Cause:
  
  High Lock Usage: A large number of transactions or processes are trying to acquire locks simultaneously, leading to saturation of the lock table.
  Long-Running Transactions: Transactions that hold locks for an extended period can contribute to filling the lock table.
  Configuration Limits: The lock table size may be set too low for the volume of transactions being processed.
  Unreleased Locks: Locks that are not released due to errors or improper transaction handling can accumulate and fill the lock table.
  
  Solution:
  
  
  Increase Lock Table Size:
  
  You can increase the size of the lock table by adjusting the parameter enque/table_size in the SAP profile. This requires a restart of the SAP system to take effect.
  Consult with your Basis team to determine the appropriate size based on your system's usage patterns.
  
  
  
  Monitor and Optimize Lock Usage:
  
  Use transaction SM12 to monitor and analyze locks. Identify long-held locks and determine if they can be released.
  Investigate the transactions that are causing excessive locking and optimize them if possible.
  
  
  
  Review Long-Running Transactions:
  
  Identify and address any long-running transactions that may be holding locks unnecessarily. This may involve optimizing the code or breaking down large transactions into smaller ones.
  
  
  
  Regular Maintenance:
  
  Implement regular checks and maintenance procedures to monitor lock usage and ensure that locks are being released appropriately.
  
  
  
  User Education:
  
  Educate users about best practices for transaction handling to minimize unnecessary locking.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM21: Check system logs for any related errors or warnings.
  ST22: Analyze dumps that may indicate issues with locking.
  
  
  
  SAP Notes: Check SAP Notes related to lock table issues for specific guidance and recommendations. You can search for relevant notes in the SAP Support Portal.
  
  
  Performance Monitoring: Use tools like ST03N to analyze performance and identify bottlenecks related to locking.
  
  
  By addressing the underlying causes and optimizing the lock management in your SAP system, you can mitigate the occurrence of the L1100 error and improve overall system performance.