How To Fix /SAPAPO/OM_PERF_MSG323 - Keyed objects: First keyed dereference after switching key caching on

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_PERF_MSG -

• Message number: 323

• Message text: Keyed objects: First keyed dereference after switching key caching on

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_PERF_MSG323 - Keyed objects: First keyed dereference after switching key caching on ?

  The SAP error message /SAPAPO/OM_PERF_MSG323 indicates an issue related to the performance of keyed objects in the SAP Advanced Planning and Optimization (APO) module. This message typically arises when key caching is enabled, and the system is attempting to dereference a keyed object for the first time. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Key Caching: The error occurs when the system is trying to access a keyed object after key caching has been enabled. Key caching is a performance optimization feature that allows the system to cache the keys of objects to speed up access.
  First Dereference: The message specifically refers to the first dereference of a keyed object after enabling key caching, which may indicate that the system is not yet optimized for this access pattern.
  Performance Impact: This can lead to performance issues if the system is not properly configured or if there are underlying data issues.
  
  Solution:
  
  Check Key Caching Configuration: Ensure that key caching is properly configured in your system. You may need to review the settings in the APO configuration to ensure they align with best practices.
  Monitor Performance: Use transaction codes like /SAPAPO/OM_PERF to monitor performance and identify any bottlenecks or issues related to keyed object access.
  Database Optimization: Ensure that the underlying database is optimized. This includes checking for proper indexing and ensuring that the database statistics are up to date.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on optimizing key caching in your version of SAP APO.
  System Updates: Ensure that your SAP system is up to date with the latest patches and updates, as performance improvements and bug fixes are often included in these updates.
  Consult SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They may provide specific guidance based on your system configuration and version.
  
  Related Information:
  
  Keyed Objects: In SAP APO, keyed objects are used to uniquely identify and access data records. Understanding how these objects work can help in troubleshooting related issues.
  Performance Tuning: Familiarize yourself with general performance tuning techniques in SAP APO, including memory management, data modeling, and query optimization.
  Documentation: Refer to the official SAP documentation for APO, which may provide additional insights into key caching and performance optimization strategies.
  
  By addressing the configuration and monitoring the performance of your SAP APO system, you can mitigate the impact of this error message and improve overall system efficiency.