How To Fix RT886 - Current use of Extended global memory [KB]

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 886

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

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 RT886 - Current use of Extended global memory [KB] ?

  The SAP error message RT886, which indicates the "Current use of Extended global memory [KB]," typically relates to issues with memory allocation in the SAP system. This error can occur when the system is running low on extended memory, which is used for various operations, including processing user requests and handling data.
  Cause:
  
  Memory Limitations: The SAP system has a defined limit for extended memory, and if the current usage exceeds this limit, it can trigger the RT886 error.
  High Workload: A sudden increase in user activity or background jobs can lead to higher memory consumption.
  Inefficient Code: Poorly optimized ABAP code or inefficient database queries can consume more memory than necessary.
  Configuration Issues: Incorrect configuration settings for memory parameters in the SAP system can lead to inadequate memory allocation.
  
  Solution:
  
  
  Increase Extended Memory:
  
  Adjust the profile parameters in the instance profile to increase the size of the extended memory. The parameters to look for include em/initial_size_MB and em/maximum_size_MB.
  After making changes, restart the SAP instance for the new settings to take effect.
  
  
  
  Optimize ABAP Code:
  
  Review and optimize any custom ABAP programs or reports that may be consuming excessive memory.
  Use performance analysis tools like the ABAP Runtime Analysis (transaction SE30) to identify memory-intensive operations.
  
  
  
  Monitor System Performance:
  
  Use transaction ST02 (Tune Summary) to monitor memory usage and identify any bottlenecks.
  Check for any long-running transactions or background jobs that may be consuming memory.
  
  
  
  Adjust Work Processes:
  
  Review the configuration of work processes in the SAP system. Increasing the number of dialog or background work processes can help distribute the load more evenly.
  
  
  
  System Upgrade:
  
  If the system is consistently running out of memory, consider upgrading the hardware or moving to a more powerful server to accommodate the workload.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to memory management.
  
  
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory (including heap memory, extended memory, and paging) can help in diagnosing and resolving memory-related issues.
  Transaction Codes: Familiarize yourself with transaction codes like ST02 (for monitoring memory), SM50 (for monitoring work processes), and ST03 (for workload analysis).
  SAP Basis Administration: Knowledge of SAP Basis administration is crucial for managing system performance and memory settings effectively.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.