How To Fix 00857 - Heap memory: High-water mark since last query

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 857

• Message text: Heap memory: High-water mark since last query

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 00857 - Heap memory: High-water mark since last query ?

  The SAP error message "00857 Heap memory: High-water mark since last query" typically indicates that the heap memory usage of the SAP system has reached a high-water mark, which is a threshold that indicates the memory consumption is high. This can lead to performance issues or even system instability if not addressed.
  Cause:
  
  
  High Memory Usage: The system is consuming a significant amount of heap memory, which can be due to various factors such as:
  
  Large data processing tasks.
  Inefficient coding or memory leaks in ABAP programs.
  High user load or concurrent sessions.
  Background jobs consuming excessive memory.
  
  
  
  Configuration Issues: The configuration settings for memory management in the SAP system may not be optimized for the current workload.
  
  
  Database Operations: Heavy database operations or inefficient queries can lead to increased memory consumption.
  
  
  Solution:
  
  
  Monitor Memory Usage: Use transaction codes like ST02 (Buffer Monitor) and ST04 (Database Performance Monitor) to analyze memory usage and identify any bottlenecks.
  
  
  Optimize ABAP Programs: Review and optimize any custom ABAP programs that may be consuming excessive memory. Look for:
  
  Inefficient loops or data handling.
  Unused variables or data structures.
  Memory leaks in the code.
  
  
  
  Adjust Memory Parameters: Check and adjust the memory parameters in the instance profile. Key parameters include:
  
  abap/heap_area_dia
  abap/heap_area_nondia
  abap/heap_area_total
  abap/heap_area_total_max
  
  
  
  Increase Heap Memory: If the workload has increased and the current memory settings are insufficient, consider increasing the heap memory limits in the instance profile.
  
  
  Review Background Jobs: Analyze background jobs to ensure they are not consuming excessive memory. If necessary, schedule them during off-peak hours.
  
  
  Database Optimization: Optimize database queries and ensure that the database is properly indexed to reduce memory consumption during data retrieval.
  
  
  System Restart: In some cases, a system restart may help clear memory and resolve temporary issues.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to memory management and performance tuning for specific recommendations and updates.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users facing similar issues.
  Performance Monitoring Tools: Utilize SAP's performance monitoring tools to gain deeper insights into memory usage patterns and identify potential issues.
  
  By following these steps, you can address the "00857 Heap memory: High-water mark since last query" error and improve the overall performance and stability of your SAP system.