How To Fix /SAPAPO/OM_PERF_MSG321 - Keyed objects: Key range iterator (objects are not stored in OMS cache)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_PERF_MSG -

• Message number: 321

• Message text: Keyed objects: Key range iterator (objects are not stored in OMS cache)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_PERF_MSG321 - Keyed objects: Key range iterator (objects are not stored in OMS cache) ?

  The SAP error message /SAPAPO/OM_PERF_MSG321 indicates that there is an issue related to the performance of the key range iterator in the SAP Advanced Planning and Optimization (APO) module. Specifically, it suggests that the objects being processed are not stored in the Object Management System (OMS) cache, which can lead to performance degradation.
  Cause:
  
  Cache Configuration: The OMS cache may not be properly configured or may be full, leading to the inability to store certain objects.
  Data Volume: A large volume of data may be causing the cache to be overwhelmed, resulting in some objects not being cached.
  Object Type: The specific type of objects being processed may not be eligible for caching.
  System Performance: General system performance issues or resource constraints (like memory) can also lead to this error.
  
  Solution:
  
  Check Cache Settings: Review and adjust the cache settings in the SAP system. Ensure that the cache size is adequate for the volume of data being processed.
  Clear Cache: If the cache is full, consider clearing it to free up space for new objects. This can sometimes resolve performance issues.
  Monitor Data Volume: Analyze the volume of data being processed and consider optimizing the data model or reducing the amount of data being processed in a single operation.
  Review Object Types: Ensure that the objects you are working with are eligible for caching. If not, consider alternative approaches to handle these objects.
  System Resources: Check the system resources (CPU, memory, etc.) to ensure that the system is not under heavy load. If necessary, consider scaling up resources or optimizing other processes running on the system.
  SAP Notes: Check for any relevant SAP Notes or patches that may address this specific error or improve the performance of the OMS cache.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for APO and OMS for detailed information on caching mechanisms and performance tuning.
  Performance Monitoring Tools: Utilize SAP performance monitoring tools (like ST03N, ST04, or ST06) to analyze system performance and identify bottlenecks.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support for further assistance.