How To Fix D4429 - SAP/OS400 extended memory mgmt: Free resources - current no. of elements

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 429

• Message text: SAP/OS400 extended memory mgmt: Free resources - current no. of elements

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D4429 - SAP/OS400 extended memory mgmt: Free resources - current no. of elements ?

  The SAP error message D4429, which relates to SAP/OS400 extended memory management, indicates that there are insufficient free resources available for the current number of elements. This error typically arises in environments where SAP is running on IBM iSeries (formerly AS/400) systems.
  Cause:
  The error D4429 is generally caused by one or more of the following factors:
  
  
  Memory Limitations: The system may have reached its limit for allocated memory resources, which can happen if there are too many processes or if the memory is not being managed effectively.
  
  
  Configuration Issues: The configuration settings for memory management in the SAP system may not be optimized for the workload, leading to inefficient use of available resources.
  
  
  Resource Leaks: There may be memory leaks in the application or in the way resources are being allocated and freed, leading to exhaustion of available memory.
  
  
  High Workload: A sudden increase in workload or concurrent users can lead to a spike in memory usage, causing the system to run out of available resources.
  
  
  Solution:
  To resolve the D4429 error, consider the following steps:
  
  
  Check Memory Configuration: Review the memory settings in the SAP system. Ensure that the parameters for extended memory and heap memory are set appropriately for your workload. You may need to adjust the abap/heap_area_dia and abap/heap_area_nondia parameters.
  
  
  Monitor Resource Usage: Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify any bottlenecks or areas where memory is being consumed excessively.
  
  
  Restart the Application Server: If the issue is due to temporary resource exhaustion, restarting the application server may help free up resources.
  
  
  Optimize Programs: Review custom ABAP programs for efficiency. Look for any loops or processes that may be consuming excessive memory and optimize them.
  
  
  Increase System Resources: If the system consistently runs out of memory, consider increasing the physical memory on the server or optimizing the workload to reduce memory consumption.
  
  
  Check for Patches: Ensure that your SAP system is up to date with the latest patches and updates, as these may contain fixes for known memory management issues.
  
  
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on memory management and configuration settings.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  IBM iSeries Documentation: Review IBM documentation for best practices on managing memory on iSeries systems.
  
  By following these steps, you should be able to diagnose and resolve the D4429 error effectively. If the problem persists, consider reaching out to SAP support for further assistance.