How To Fix CSM_VMC105 - Total Duration of the Recorded Shared GCs

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_VMC - Messages for VM Container Monitoring

• Message number: 105

• Message text: Total Duration of the Recorded Shared GCs

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 CSM_VMC105 - Total Duration of the Recorded Shared GCs ?

  The SAP error message CSM_VMC105, which refers to the "Total Duration of the Recorded Shared GCs," typically relates to issues with garbage collection (GC) in the Java Virtual Machine (JVM) that is running your SAP application. This error can indicate that the garbage collection process is taking longer than expected, which can lead to performance issues in your SAP system.
  Cause:
  
  High Memory Usage: If your application is consuming a lot of memory, the garbage collector may take longer to reclaim memory.
  Insufficient Heap Size: If the JVM heap size is not configured properly, it can lead to frequent and prolonged garbage collection cycles.
  Inefficient Code: Poorly optimized code can lead to excessive object creation, which increases the workload on the garbage collector.
  Fragmentation: Memory fragmentation can occur over time, making it difficult for the garbage collector to find contiguous blocks of memory to allocate.
  GC Algorithm: The choice of garbage collection algorithm can also impact performance. Some algorithms are better suited for certain workloads than others.
  
  Solution:
  
  Monitor Memory Usage: Use monitoring tools to analyze memory usage patterns and identify memory leaks or excessive memory consumption.
  Adjust Heap Size: Increase the JVM heap size parameters (e.g., -Xms for initial heap size and -Xmx for maximum heap size) based on the application's requirements.
  Optimize Code: Review and optimize your application code to reduce unnecessary object creation and improve memory management.
  Change GC Algorithm: Experiment with different garbage collection algorithms (e.g., G1, CMS, Parallel GC) to find one that better suits your application's workload.
  Tune GC Parameters: Fine-tune the garbage collection parameters to optimize performance. This may include adjusting thresholds for triggering GC or modifying pause times.
  Regular Maintenance: Perform regular maintenance on your application, including updates and patches, to ensure optimal performance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to JVM performance and garbage collection for specific recommendations and best practices.
  Monitoring Tools: Utilize tools like SAP Solution Manager, JVisualVM, or other APM (Application Performance Management) tools to monitor JVM performance and garbage collection metrics.
  Documentation: Refer to the official SAP documentation for guidelines on configuring and tuning the JVM for SAP applications.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the impact of the CSM_VMC105 error and improve the overall performance of your SAP system.