How To Fix CCMS_AGENT030 - Duration of the last complete garbage collection

SAP Error Message - Details

• Message type: E = Error

• Message class: CCMS_AGENT -

• Message number: 030

• Message text: Duration of the last complete garbage collection

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 CCMS_AGENT030 - Duration of the last complete garbage collection ?

  The SAP error message CCMS_AGENT030 typically relates to the performance of the Java Virtual Machine (JVM) used by SAP applications. This specific message indicates that the duration of the last complete garbage collection (GC) cycle exceeded a predefined threshold, which can lead to performance issues in the application.
  Cause:
  
  High Memory Usage: The application may be consuming a large amount of memory, leading to longer garbage collection times.
  Inefficient Memory Management: Poorly optimized code or memory leaks can cause the JVM to struggle with memory management.
  Configuration Issues: The JVM may not be optimally configured for the workload, leading to inefficient garbage collection.
  Insufficient Heap Size: The allocated heap size may be too small for the application's needs, causing frequent and prolonged garbage collection cycles.
  
  Solution:
  
  
  Analyze Memory Usage:
  
  Use monitoring tools (like SAP Solution Manager or Java Mission Control) to analyze memory usage patterns and identify potential memory leaks or high memory consumers.
  
  
  
  Optimize Code:
  
  Review and optimize the application code to reduce memory consumption. Look for objects that are not being released properly and ensure that resources are managed effectively.
  
  
  
  Adjust JVM Parameters:
  
  Tune the JVM parameters related to garbage collection. This may include adjusting the heap size (-Xms and -Xmx), selecting a different garbage collection algorithm (e.g., G1GC, CMS), or modifying other GC-related parameters.
  Example parameters to consider:
  
  -XX:MaxGCPauseMillis to set a target for maximum GC pause time.
  -XX:GCTimeRatio to control the ratio of time spent in GC versus application execution.
  
  
  
  
  
  Increase Heap Size:
  
  If the application consistently runs out of memory, consider increasing the heap size to accommodate the workload.
  
  
  
  Regular Monitoring:
  
  Implement regular monitoring of the JVM and application performance to catch issues early and adjust configurations as needed.
  
  
  
  Update SAP and JVM:
  
  Ensure that you are running the latest version of SAP and the JVM, as updates often include performance improvements and bug fixes.
  
  
  
  Related Information:
  
  Garbage Collection Types: Familiarize yourself with different types of garbage collectors available in the JVM (e.g., Serial, Parallel, CMS, G1) and their characteristics to choose the best fit for your application.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to garbage collection and performance tuning.
  Documentation: Refer to the official SAP documentation and JVM documentation for best practices on memory management and performance tuning.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the impact of the CCMS_AGENT030 error and improve the performance of your SAP application.