How To Fix RT887 - Maxmimum use of Extended global memory [KB] since system start

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 887

• Message text: Maxmimum use of Extended global memory [KB] since system start

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT887 - Maxmimum use of Extended global memory [KB] since system start ?

  The SAP error message RT887 indicates that the maximum use of extended global memory has been reached since the system started. This can lead to performance issues or even system instability if not addressed. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Memory Consumption: The error typically arises when the SAP system has consumed a significant amount of extended global memory, which is used for various operations, including buffering, caching, and storing data.
  Configuration Limits: The system may be configured with limits that are too low for the workload it is handling, leading to memory exhaustion.
  Memory Leaks: There could be memory leaks in custom code or third-party add-ons that are consuming memory without releasing it.
  High Workload: A sudden increase in workload or a large number of concurrent users can lead to increased memory usage.
  
  Solutions:
  
  Monitor Memory Usage: Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify which processes are consuming the most memory.
  Increase Memory Limits: If the system is consistently hitting memory limits, consider increasing the parameters for extended memory in the instance profile. Key parameters include:
  
  abap/heap_area_dia
  abap/heap_area_nondia
  abap/heap_area_total
  
  
  Review Custom Code: Analyze custom ABAP code for potential memory leaks or inefficient memory usage. Use tools like the ABAP Runtime Analysis (transaction SE30) to identify problematic areas.
  Adjust Buffer Settings: Review and adjust buffer settings in the SAP system to optimize memory usage. This includes adjusting the size of the database buffer, program buffer, and other relevant buffers.
  Restart the Instance: If immediate relief is needed, restarting the SAP instance can free up memory, but this is a temporary solution and should be followed by a more permanent fix.
  System Upgrade: If the system is running on outdated hardware or software, consider upgrading to a more capable environment that can handle the workload more efficiently.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific guidance and best practices.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have faced similar issues.
  Documentation: Refer to SAP documentation on memory management and performance tuning for detailed guidelines on configuring memory parameters.
  
  Conclusion:
  Addressing the RT887 error requires a combination of monitoring, configuration adjustments, and potentially code optimization. Regularly reviewing system performance and memory usage can help prevent this issue from recurring.