How To Fix ICM520 - Configured HTTP Server Cache (File System)

SAP Error Message - Details

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 520

• Message text: Configured HTTP Server Cache (File System)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ICM520 - Configured HTTP Server Cache (File System) ?

  The SAP error message ICM520 indicates an issue with the configuration of the HTTP server cache in the Internet Communication Manager (ICM). This error typically arises when the ICM is unable to access or utilize the configured file system cache for HTTP responses.
  Cause:
  The error can be caused by several factors, including:
  
  Incorrect Configuration: The cache settings in the ICM profile may not be correctly configured.
  File System Permissions: The user under which the SAP system is running may not have the necessary permissions to read/write to the cache directory.
  Disk Space Issues: The file system may be full, preventing the cache from being utilized.
  Path Issues: The path specified for the cache may not exist or may be incorrectly specified.
  File System Errors: There may be underlying file system issues that are preventing access to the cache.
  
  Solution:
  To resolve the ICM520 error, you can follow these steps:
  
  
  Check Configuration:
  
  Review the ICM configuration in the instance profile (usually found in instance profile or RZ10).
  Ensure that the parameters related to the HTTP server cache are correctly set. Look for parameters like icm/HTTP/file_cache and icm/HTTP/file_cache_size.
  
  
  
  Verify File System Permissions:
  
  Check the permissions of the directory specified for the cache. Ensure that the SAP user has the necessary read/write permissions.
  You can use commands like ls -l (on Unix/Linux) to check permissions.
  
  
  
  Check Disk Space:
  
  Ensure that there is sufficient disk space available on the file system where the cache is located. You can use commands like df -h to check disk usage.
  
  
  
  Validate Cache Path:
  
  Confirm that the path specified for the cache exists. If it does not, create the directory or correct the path in the configuration.
  
  
  
  Review Logs:
  
  Check the ICM logs for any additional error messages or warnings that may provide more context about the issue. The logs can usually be found in the dev_icm file.
  
  
  
  Restart ICM:
  
  After making any changes, restart the ICM to apply the new configuration. This can be done through transaction SMICM or by restarting the SAP instance.
  
  
  
  Consult SAP Notes:
  
  If the issue persists, consult the SAP Support Portal for any relevant SAP Notes that may address this specific error.
  
  
  
  Related Information:
  
  ICM Configuration Parameters: Familiarize yourself with the various parameters related to ICM and HTTP caching. You can find documentation in the SAP Help Portal.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to diagnose and resolve the ICM520 error related to the configured HTTP server cache.