How To Fix 00858 - Currently amount allocated to heap memory

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 858

• Message text: Currently amount allocated to heap memory

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 00858 - Currently amount allocated to heap memory ?

  The SAP error message "00858 Currently amount allocated to heap memory" typically indicates that the system has reached a limit on the amount of heap memory allocated for a particular process or transaction. This can occur in various scenarios, such as during the execution of ABAP programs, when handling large datasets, or when performing memory-intensive operations.
  Cause:
  
  
  Memory Limit Reached: The heap memory allocated for the SAP instance has reached its maximum limit, which can be due to:
  
  Large data processing.
  Inefficient memory usage in ABAP programs.
  Insufficient memory configuration for the SAP instance.
  
  
  
  Configuration Issues: The SAP system may not be configured to handle the required memory load, especially if the default settings are not adjusted for the specific workload.
  
  
  Memory Leaks: There may be memory leaks in custom ABAP programs or third-party add-ons that are consuming more memory than expected.
  
  
  Solution:
  
  
  Increase Heap Memory:
  
  You can increase the heap memory allocation in the SAP profile parameters. Look for parameters like abap/heap_area_dia and abap/heap_area_nondia and adjust their values according to your system's requirements.
  After making changes, restart the SAP instance for the new settings to take effect.
  
  
  
  Optimize ABAP Code:
  
  Review and optimize the ABAP code to ensure efficient memory usage. This includes:
  
  Avoiding unnecessary data loads.
  Using appropriate data types and structures.
  Implementing proper data handling techniques (e.g., using SELECT SINGLE instead of SELECT * when possible).
  
  
  
  
  
  Monitor Memory Usage:
  
  Use transaction codes like ST02 (Tune Summary) and SM50 (Process Overview) to monitor memory usage and identify any processes that are consuming excessive memory.
  
  
  
  Check for Memory Leaks:
  
  Analyze custom programs for potential memory leaks. Use tools like the ABAP Memory Inspector to identify and fix issues.
  
  
  
  System Configuration:
  
  Ensure that the underlying hardware and operating system are adequately provisioned to support the SAP instance's memory requirements.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to heap memory allocation.
  
  
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in troubleshooting and optimizing performance. Familiarize yourself with concepts like roll memory, heap memory, and extended memory.
  SAP Basis Administration: Knowledge of SAP Basis administration can be beneficial for configuring and managing system parameters related to memory.
  Performance Tuning: Regular performance tuning and monitoring can help prevent memory-related issues from occurring in the future.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.