How To Fix RT885 - Current use of Extended global memory [%]

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 885

• Message text: Current use of Extended global memory [%]

Self-Explanatory Message

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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 RT885 - Current use of Extended global memory [%] ?

  The SAP error message RT885 indicates that the current use of Extended Global Memory (EGM) has reached a certain threshold, which can lead to performance issues or even system instability if not addressed. This message is typically related to the configuration and management of memory resources in an SAP system.
  Cause:
  
  
  High Memory Usage: The primary cause of this error is that the Extended Global Memory is being utilized heavily, which can occur due to:
  
  Large data processing tasks.
  Inefficient memory management in the application.
  Insufficient memory allocation for the SAP instance.
  Memory leaks in custom code or third-party add-ons.
  
  
  
  Configuration Issues: The configuration settings for memory allocation may not be optimized for the workload, leading to excessive use of EGM.
  
  
  System Load: Increased user activity or background jobs can lead to higher memory consumption.
  
  
  Solution:
  
  
  Monitor Memory Usage: Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify any bottlenecks or high usage patterns.
  
  
  Adjust Memory Parameters: 
  
  Increase the size of the Extended Global Memory in the instance profile. This can be done by modifying the abap/heap_area_total and abap/heap_area_dia parameters in the instance profile.
  Ensure that the abap/heap_area_nondia parameter is also set appropriately.
  
  
  
  Optimize Code: Review custom ABAP code and third-party add-ons for memory efficiency. Look for:
  
  Unused variables or data structures.
  Inefficient loops or data processing methods.
  Memory leaks that may be causing excessive memory consumption.
  
  
  
  System Configuration: Ensure that the SAP system is configured according to best practices for memory management. This includes:
  
  Regularly updating the system to the latest support packages and patches.
  Reviewing and adjusting the configuration based on the current workload and usage patterns.
  
  
  
  Increase Hardware Resources: If the system consistently runs out of memory, consider upgrading the hardware resources (RAM) allocated to the SAP instance.
  
  
  Restart the Instance: In some cases, a temporary solution may be to restart the SAP instance to clear memory and reset usage statistics.
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide additional insights or specific fixes related to memory management and the RT885 error.
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered similar issues.
  Performance Tuning: Regularly perform performance tuning and monitoring to prevent memory-related issues from arising in the future.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the impact of the RT885 error and improve the overall performance of your SAP system.