How To Fix MFLE_TOOLS123 - Memory threshold &1 Bytes is exceeded since &2 s. Used memory: &3 Bytes

SAP Error Message - Details

• Message type: E = Error

• Message class: MFLE_TOOLS - Msg Type for MFLE_TOOLS

• Message number: 123

• Message text: Memory threshold &1 Bytes is exceeded since &2 s. Used memory: &3 Bytes

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Please check note 2347739.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MFLE_TOOLS123 - Memory threshold &1 Bytes is exceeded since &2 s. Used memory: &3 Bytes ?

  The SAP error message MFLE_TOOLS123 indicates that a memory threshold has been exceeded in the SAP system. This message typically arises in the context of memory management within the SAP environment, particularly when the system is running processes that require more memory than what has been allocated or is available.
  Cause:
  
  
  Memory Limit Exceeded: The error occurs when the memory usage of a particular process exceeds the defined threshold. This can happen due to:
  
  Inefficient coding or processing logic in ABAP programs.
  Large data sets being processed without adequate memory management.
  Insufficient memory allocation for the SAP instance or application server.
  Memory leaks in custom programs or third-party add-ons.
  
  
  
  Long Running Processes: If a process runs for an extended period, it may accumulate memory usage, leading to this error.
  
  
  Configuration Issues: The system may not be optimally configured for the workload it is handling, leading to memory constraints.
  
  
  Solution:
  
  
  Increase Memory Allocation: 
  
  Review and increase the memory settings for the SAP instance. This can be done in the instance profile parameters (e.g., abap/heap_area_total, abap/heap_area_dia, etc.).
  Ensure that the operating system has sufficient resources available.
  
  
  
  Optimize ABAP Code:
  
  Analyze the ABAP programs that are running when the error occurs. Look for opportunities to optimize memory usage, such as using more efficient data structures or reducing the size of internal tables.
  Use transaction ST22 to check for dumps related to memory issues and analyze the code for potential improvements.
  
  
  
  Monitor Memory Usage:
  
  Use transaction ST03N to monitor the workload and memory consumption of different transactions and programs.
  Identify long-running transactions and analyze their memory usage patterns.
  
  
  
  Adjust Thresholds:
  
  If appropriate, consider adjusting the memory threshold settings in the system configuration to accommodate the workload.
  
  
  
  Check for Memory Leaks:
  
  Investigate if there are any memory leaks in custom programs or third-party add-ons. Use tools like the ABAP Memory Inspector to analyze memory usage.
  
  
  
  System Restart: In some cases, a system restart may help clear up memory issues temporarily, but it is not a long-term solution.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  ST22: Dump analysis to check for short dumps related to memory issues.
  SM37: Job monitoring to check for long-running jobs that may be consuming excessive memory.
  ST03N: Workload analysis to monitor memory usage and performance.
  
  
  
  SAP Notes: Check SAP Notes related to memory management and specific error messages for additional guidance and patches.
  
  
  Documentation: Review SAP documentation on memory management best practices and guidelines for optimizing ABAP programs.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the occurrence of the MFLE_TOOLS123 error and improve the overall performance of your SAP system.