How To Fix /SAPAPO/OM_PERF_MSG300 - Heap: Create/Delete 50MB in chunks of random size between 0 and 1kB

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_PERF_MSG -

• Message number: 300

• Message text: Heap: Create/Delete 50MB in chunks of random size between 0 and 1kB

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 /SAPAPO/OM_PERF_MSG300 - Heap: Create/Delete 50MB in chunks of random size between 0 and 1kB ?

  The SAP error message /SAPAPO/OM_PERF_MSG300 typically relates to performance issues in the SAP Advanced Planning and Optimization (APO) module, specifically concerning memory management. The message indicates that the system is experiencing difficulties with heap memory allocation, which can lead to performance degradation or even system crashes if not addressed.
  Cause:
  
  Memory Fragmentation: The error suggests that the system is trying to allocate or deallocate memory in chunks of varying sizes, which can lead to fragmentation. This can occur if there are many small memory allocations and deallocations happening frequently.
  Insufficient Memory: The system may not have enough available memory to handle the requests being made, leading to the need for frequent heap memory operations.
  High Load: A high number of concurrent users or processes can increase memory usage and lead to performance issues.
  Configuration Issues: Incorrect configuration settings for memory management in SAP can also lead to this error.
  
  Solution:
  
  Increase Memory Allocation: Review and increase the memory settings for the SAP system. This can be done by adjusting the instance profile parameters related to memory allocation.
  
  Parameters to consider include abap/heap_area_total, abap/heap_area_dia, and abap/heap_area_nondia.
  
  
  Optimize Code: If custom ABAP code is causing excessive memory allocation, review and optimize the code to reduce memory usage.
  Monitor System Performance: Use transaction codes like ST02 (Buffer Monitor) and ST04 (Database Performance Monitor) to analyze memory usage and identify bottlenecks.
  Adjust Work Processes: If the system is under heavy load, consider adjusting the number of work processes or the configuration of the application server to better handle the load.
  Regular Maintenance: Perform regular system maintenance, including database optimization and cleanup of temporary files, to ensure optimal performance.
  Upgrade SAP Version: If you are running an older version of SAP, consider upgrading to a newer version that may have improved memory management and performance enhancements.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance issues in APO. SAP frequently releases notes that provide guidance on specific error messages and performance tuning.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  Performance Tuning Guides: Refer to SAP's official performance tuning guides for APO, which provide best practices for optimizing system performance.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.