How To Fix 00851 - Extended memory: high-water mark since startup

00851 - Overview

• Message type: E = Error

• Message class: 00 -

• Message number: 851

• Message text: Extended memory: high-water mark since startup

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00851 - Extended memory: high-water mark since startup ?

  The SAP error message "00851 Extended memory: high-water mark since startup" indicates that the extended memory usage in the SAP system has reached a critical level. This message is a warning that the system is using a significant amount of its allocated extended memory, which can lead to performance issues or even system instability if not addressed.
  
  Cause:
  
  High Memory Usage: The primary cause of this error is that the SAP system is consuming a large amount of extended memory, which is used for storing data and program code.
  Inefficient Programs: Poorly designed ABAP programs or transactions that consume excessive memory can lead to high memory usage.
  Large Number of Users: A high number of concurrent users can increase memory consumption, especially if many users are running memory-intensive transactions.
  
  Configuration Issues: Incorrect configuration of memory parameters in the SAP system can lead to inefficient memory usage.
  
  
  Solution:
  
  Monitor Memory Usage: Use transaction codes like SM04 (User Overview)