How To Fix ICM530 - Number of entries in HTTP UFO cache

SAP Error Message - Details

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 530

• Message text: Number of entries in HTTP UFO cache

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 ICM530 - Number of entries in HTTP UFO cache ?

  The SAP error message ICM530 indicates that the number of entries in the HTTP UFO (Universal File Object) cache has reached its limit. This can lead to performance issues or the inability to cache new objects, which can affect the overall performance of the SAP system, especially in scenarios involving web applications.
  Cause:
  The error typically occurs when:
  
  The cache size limit is reached, meaning that the maximum number of entries allowed in the UFO cache has been exceeded.
  There are too many objects being cached without proper eviction of old or less frequently used objects.
  Configuration settings for the cache size are not optimized for the current workload.
  
  Solution:
  To resolve the ICM530 error, you can take the following steps:
  
  
  Increase Cache Size:
  
  You can increase the maximum number of entries allowed in the UFO cache. This can be done by adjusting the profile parameters in the SAP system.
  The relevant parameter is icm/HTTP/UFO/MaxEntries. You can increase this value based on your system's requirements.
  
  
  
  Clear Cache:
  
  You can manually clear the UFO cache to free up space. This can be done using transaction code SICF or through the ICM (Internet Communication Manager) settings.
  You can also restart the ICM to clear the cache.
  
  
  
  Optimize Cache Usage:
  
  Review the caching strategy and ensure that only necessary objects are being cached.
  Implement cache eviction policies to remove old or less frequently accessed objects from the cache.
  
  
  
  Monitor Cache Usage:
  
  Use transaction codes like SMICM to monitor the cache usage and performance.
  Regularly check the cache statistics to understand the usage patterns and adjust the configuration accordingly.
  
  
  
  Review Application Design:
  
  If the application is generating a high number of unique objects, consider optimizing the application design to reduce the number of cache entries.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SMICM: Monitor ICM settings and performance.
  SICF: Manage HTTP services and settings.
  
  
  
  Profile Parameters:
  
  icm/HTTP/UFO/MaxEntries: Maximum number of entries in the UFO cache.
  icm/HTTP/UFO/MaxSize: Maximum size of the UFO cache.
  
  
  
  Documentation:
  
  Refer to the SAP Help Portal or SAP Notes for detailed information on configuring and managing the ICM and UFO cache.
  
  
  
  By following these steps, you should be able to resolve the ICM530 error and improve the performance of your SAP system.