How To Fix VMC_ADMIN007 - The forced shared garbage collection has been interrupted

SAP Error Message - Details

• Message type: E = Error

• Message class: VMC_ADMIN - messages for VMC Administration and Monitoring

• Message number: 007

• Message text: The forced shared garbage collection has been interrupted

What causes this issue?

The Java thread being processed in its own Java VM and waiting for the
shared garbage collection has been terminated by an
InterruptedException. The information about the GC run may be
incomplete.

System Response

With forced shared garbage collections the monitoring thread waits for
the end of the GC run to make sure that the information requested
afterwards about the <ZK>distributed data areas (shared closures)</> is
free of unassigned data blocks. Possibly, an error during the GC runs
has interrupted this synchronization.

How to fix this error?

Check the preconfigured system log files (they usually have the name
vmc_<number>.log in the VMC root directory)for details about the cause
of the termination.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VMC_ADMIN007 - The forced shared garbage collection has been interrupted ?

  The SAP error message VMC_ADMIN007 indicates that a forced shared garbage collection (GC) process was interrupted. This can occur in environments where the Java Virtual Machine (JVM) is used, particularly in SAP systems that utilize the SAP NetWeaver Application Server Java (AS Java).
  Cause:
  
  Resource Constraints: The JVM may not have enough resources (CPU, memory) to complete the garbage collection process.
  High Load: If the system is under heavy load, the garbage collection process may be interrupted due to other higher-priority tasks.
  Configuration Issues: Incorrect JVM settings or parameters can lead to inefficient garbage collection processes.
  Thread Interruption: The garbage collection process can be interrupted by other threads or processes that require immediate attention.
  
  Solution:
  
  Monitor System Resources: Check the CPU and memory usage of the JVM. Ensure that there are sufficient resources available for the garbage collection process.
  Adjust JVM Parameters: Review and adjust the JVM parameters related to garbage collection. This may include tuning the heap size, garbage collection algorithms, and other related settings.
  Reduce Load: If possible, reduce the load on the system during peak times to allow the garbage collection process to complete without interruption.
  Check for Long-Running Processes: Identify and optimize any long-running processes that may be consuming resources and causing interruptions.
  Review Logs: Check the SAP logs for any additional error messages or warnings that may provide more context about the interruption.
  Update SAP and JVM: Ensure that you are running the latest patches and updates for both SAP and the JVM, as updates may contain performance improvements and bug fixes.
  
  Related Information:
  
  Garbage Collection in Java: Understanding how garbage collection works in Java can help in tuning the JVM for better performance.
  SAP Notes: Check SAP Notes related to VMC_ADMIN007 for any specific recommendations or fixes provided by SAP.
  Performance Monitoring Tools: Utilize performance monitoring tools to analyze JVM performance and garbage collection behavior.
  SAP Community: Engage with the SAP Community for insights and experiences from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.