How To Fix CSM_VMC086 - Success Rate of Attempt to Access the Cache

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_VMC - Messages for VM Container Monitoring

• Message number: 086

• Message text: Success Rate of Attempt to Access the Cache

What causes this issue?

This shows the proportion of successful cache read accesses. Successful
means that data can be read directly from the relatively fast cache
memory. If there is still no entry with the data object searched for,
depending on the cache setting, the data must be retrieved either with
considerably more effort from another source (database, file system,
remote back end), or an error code is output internally for the
application (cache miss). Only data retrieved directly from the cache
memory is indicated as a success. The cache success rate is an important
factor for performance tuning of an application. The more configuration
data retrieved from the cache, the quicker the data is processed in the
application, and therefore the better this is for optimizing runtime.
You can find more information in the online documentation under
<DS:KENO.001560AA0E081DEB9290E35086BF84D6>Caching in the VM Container</>

System Response

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

How to fix this error?

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_VMC086 - Success Rate of Attempt to Access the Cache ?

  The SAP error message CSM_VMC086 typically relates to issues with the cache access in the SAP system, particularly in the context of the SAP Cache Management (CSM) framework. This error indicates that there is a problem with the success rate of attempts to access the cache, which can affect the performance and efficiency of the system.
  Cause:
  
  Cache Configuration Issues: The cache may not be properly configured, leading to a high failure rate when attempting to access cached data.
  Data Expiration: Cached data may have expired or been invalidated, resulting in unsuccessful access attempts.
  System Load: High system load or resource contention can lead to timeouts or failures in accessing the cache.
  Network Issues: If the cache is distributed across multiple nodes, network issues can affect access to the cache.
  Insufficient Memory: The cache may not have enough memory allocated, leading to frequent evictions and failures to access data.
  
  Solution:
  
  Check Cache Configuration: Review the cache settings in the SAP system to ensure they are correctly configured. Adjust parameters as necessary.
  Monitor Cache Usage: Use monitoring tools to analyze cache usage patterns and identify any bottlenecks or issues.
  Increase Cache Size: If memory is a constraint, consider increasing the size of the cache to accommodate more data.
  Review Expiration Policies: Check the expiration policies for cached data to ensure they are appropriate for your use case.
  Optimize Queries: If specific queries are causing high cache access failures, consider optimizing them to reduce load on the cache.
  Check System Resources: Ensure that the system has adequate resources (CPU, memory, etc.) to handle the load and access the cache efficiently.
  Network Configuration: If applicable, check the network configuration to ensure that there are no connectivity issues affecting cache access.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to cache management and performance issues for specific guidance and patches.
  Transaction Codes: Use transaction codes like SM12 (to check for locks), SM21 (to view system logs), and ST22 (to analyze dumps) for troubleshooting.
  Performance Monitoring: Utilize tools like SAP Solution Manager or transaction ST03N to monitor system performance and identify areas for improvement.
  Documentation: Refer to the official SAP documentation for Cache Management for detailed information on configuration and best practices.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.