How To Fix TPDA308 - Garbage collector started

SAP Error Message - Details

• Message type: E = Error

• Message class: TPDA - Debugger

• Message number: 308

• Message text: Garbage collector started

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message TPDA308 - Garbage collector started ?

  The SAP error message TPDA308, which states "Garbage collector started," typically indicates that the Java Virtual Machine (JVM) is performing garbage collection. This is a normal process in Java applications, including those running on SAP systems, where the garbage collector reclaims memory that is no longer in use to optimize performance and prevent memory leaks.
  Cause:
  
  Memory Management: The JVM automatically manages memory allocation and deallocation. When the memory usage reaches a certain threshold, the garbage collector is triggered to free up memory.
  High Memory Usage: If your SAP system is experiencing high memory usage due to large data processing, many active sessions, or inefficient memory management in the application, the garbage collector may be invoked more frequently.
  Configuration Issues: The JVM settings may not be optimized for your specific workload, leading to frequent garbage collection events.
  
  Solution:
  
  Monitor Memory Usage: Use monitoring tools to analyze memory usage patterns in your SAP system. This can help identify if there are memory leaks or if the system is under heavy load.
  Optimize JVM Parameters: Adjust the JVM parameters related to memory allocation. This includes settings for heap size (-Xms for initial heap size and -Xmx for maximum heap size) and garbage collection options. You may want to increase the heap size if the application frequently runs out of memory.
  Review Application Code: If the garbage collection is excessive, review the application code for potential memory leaks or inefficient memory usage patterns. This may involve optimizing data structures or reducing the number of objects created.
  Upgrade Hardware: If the system consistently runs out of memory, consider upgrading the hardware (more RAM) to accommodate the workload.
  Use Profiling Tools: Utilize Java profiling tools to analyze memory usage and identify objects that are consuming excessive memory.
  
  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 configurations.
  SAP Notes: Check SAP Notes related to performance tuning and memory management for your specific version of SAP.
  Documentation: Refer to the official SAP documentation and Java documentation for best practices in memory management and garbage collection tuning.
  
  If the issue persists or if you notice performance degradation, it may be beneficial to consult with SAP support or a technical expert who can provide more tailored assistance based on your specific environment and configuration.