How To Fix CSM_VMC089 - Number of old cache entries deleted in the background

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_VMC - Messages for VM Container Monitoring

• Message number: 089

• Message text: Number of old cache entries deleted in the background

What causes this issue?

When saving an object in the cache causes another object to be deleted,
this is called eviction. Objects can be evicted synchronously or
asynchronously. Synchronous eviction means that when the cache is full,
an old object is deleted in order to save the new one. Asynchronous
means that a cleanup job deletes the old objects without a new object
being stored directly.
This number indicates how many cache entries are evicted asynchronusly
in the background.
You can find more information in the online documentation under
<DS:KENO.001560AA0E081DEB9290E35086BF84D6>Caching in the VM Container</>

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CSM_VMC089 - Number of old cache entries deleted in the background ?

  The SAP error message CSM_VMC089, which states "Number of old cache entries deleted in the background," typically relates to the cache management in SAP systems, particularly in the context of the SAP Customer Service Management (CSM) or similar modules that utilize caching for performance optimization.
  Cause:
  
  Cache Management: This message indicates that the system is actively managing its cache by deleting old or outdated cache entries. This is a normal operation and is part of the system's effort to maintain optimal performance and resource utilization.
  Memory Constraints: If the cache reaches its limit or if there are memory constraints, the system will automatically delete older entries to make room for new ones.
  Configuration Settings: The cache settings may be configured to automatically clean up old entries after a certain threshold is reached.
  
  Solution:
  
  Monitor Cache Settings: Check the cache configuration settings in your SAP system. You may want to adjust the size of the cache or the parameters that control how old entries are deleted.
  Performance Monitoring: Regularly monitor the performance of your SAP system to ensure that the cache is functioning optimally. Use transaction codes like ST02 (Buffer Management) to analyze the buffer and cache usage.
  Increase Cache Size: If you find that the cache is frequently reaching its limit, consider increasing the cache size if your system resources allow for it.
  Review System Logs: Check system logs for any related messages that might indicate underlying issues with cache management or performance bottlenecks.
  Consult Documentation: Refer to SAP documentation or notes related to cache management for specific recommendations based on your system version and configuration.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like ST02 (for buffer management) and SM12 (for lock entries) to monitor and manage system performance.
  SAP Notes: Look for relevant SAP Notes that may provide additional insights or patches related to cache management.
  Performance Tuning: Consider engaging in performance tuning activities if you notice that cache management is impacting system performance.
  
  In summary, the CSM_VMC089 message is generally not an error but rather an informational message about the system's cache management activities. Regular monitoring and adjustments to cache settings can help maintain optimal performance.