How To Fix D4454 - Main storage pool: Active to ineligible

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 454

• Message text: Main storage pool: Active to ineligible

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 D4454 - Main storage pool: Active to ineligible ?

  The SAP error message D4454, which states "Main storage pool: Active to ineligible," typically indicates an issue related to memory management within the SAP system. This error occurs when the system attempts to allocate memory from a storage pool that has been marked as ineligible for use, which can lead to performance issues or system instability.
  Cause:
  
  Memory Allocation Issues: The error often arises when the SAP system is unable to allocate memory from the main storage pool due to it being marked as ineligible. This can happen if the memory pool is exhausted or if there are configuration issues.
  Configuration Settings: Incorrect configuration settings in the SAP system related to memory management can lead to this error.
  System Load: High system load or resource contention can also cause the main storage pool to become ineligible.
  Database Issues: Sometimes, issues with the underlying database can affect memory allocation.
  
  Solution:
  
  Check Memory Configuration: Review the memory configuration settings in the SAP system. Ensure that the parameters related to memory allocation are set correctly. This includes parameters like abap/heap_area_total, abap/heap_area_dia, and others.
  Monitor System Performance: Use transaction codes like ST02 (Tune Summary) and ST03 (Workload Analysis) to monitor memory usage and identify any bottlenecks or issues.
  Adjust Memory Parameters: If necessary, adjust the memory parameters to allocate more memory to the main storage pool. This may involve increasing the size of the memory pool or adjusting the distribution of memory between different areas.
  Restart the System: In some cases, a system restart may help to clear any temporary issues and reset the memory allocation.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as these may contain fixes for known issues related to memory management.
  Consult SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in diagnosing and resolving issues related to memory allocation. Familiarize yourself with the different memory areas (e.g., heap memory, roll memory) and their configurations.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools to keep an eye on memory usage and system performance. This can help in proactively identifying potential issues before they lead to errors.
  SAP Community and Forums: Engaging with the SAP community through forums and discussion groups can provide insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.