How To Fix CSM_VMC104 - Frequency of Shared Garbage Collection Runs

SAP Error Message - Details

• Message type: E = Error

• Message class: CSM_VMC - Messages for VM Container Monitoring

• Message number: 104

• Message text: Frequency of Shared Garbage Collection Runs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CSM_VMC104 - Frequency of Shared Garbage Collection Runs ?

  The SAP error message CSM_VMC104, which pertains to the "Frequency of Shared Garbage Collection Runs," typically indicates that the frequency of garbage collection (GC) runs in the SAP system is not optimal. This can lead to performance issues, as garbage collection is responsible for reclaiming memory that is no longer in use.
  Cause:
  
  High Memory Usage: The application may be consuming a lot of memory, leading to frequent garbage collection.
  Configuration Issues: The settings for garbage collection frequency may not be properly configured for the workload of the application.
  Inefficient Code: Poorly optimized code can lead to excessive object creation, which in turn increases the frequency of garbage collection.
  Memory Leaks: If there are memory leaks in the application, it can cause the garbage collector to run more frequently.
  
  Solution:
  
  
  Adjust Garbage Collection Settings:
  
  Review and adjust the garbage collection settings in the SAP system. This can often be done in the SAP profile parameters (e.g., gc_interval, gc_max_pause_time).
  Consider increasing the heap size if the application is consistently running out of memory.
  
  
  
  Optimize Application Code:
  
  Review the application code for inefficiencies. Look for areas where objects are being created unnecessarily or where memory can be managed more effectively.
  Use profiling tools to identify memory hotspots and optimize them.
  
  
  
  Monitor Memory Usage:
  
  Use SAP monitoring tools (like ST06, ST02, or transaction ST04) to monitor memory usage and garbage collection activity.
  Analyze the memory consumption patterns and adjust the application or system configuration accordingly.
  
  
  
  Check for Memory Leaks:
  
  Use tools to detect memory leaks in the application. This may involve analyzing heap dumps or using specific SAP tools designed for this purpose.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on garbage collection tuning.
  
  
  
  Related Information:
  
  Garbage Collection Types: Understand the different types of garbage collection (e.g., minor GC, major GC) and how they impact performance.
  SAP Memory Management: Familiarize yourself with SAP's memory management concepts, including the heap, stack, and memory areas.
  Performance Tuning: Consider broader performance tuning strategies for the SAP system, including database optimization, application server tuning, and network performance.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the issues related to the CSM_VMC104 error and improve the overall performance of your SAP system.