How To Fix SY418 - Memory monitoring switched on

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 418

• Message text: Memory monitoring switched on

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 SY418 - Memory monitoring switched on ?

  The SAP error message SY418 indicates that memory monitoring has been switched on in the SAP system. This message is typically related to the system's memory management and can occur in various scenarios, particularly when the system is experiencing memory pressure or when certain thresholds are exceeded.
  Cause:
  
  Memory Pressure: The system may be running low on available memory, which can trigger the memory monitoring feature.
  Configuration Settings: Memory monitoring may have been enabled in the system configuration, which can lead to this message being displayed when certain memory thresholds are reached.
  High Workload: A sudden increase in workload or inefficient memory usage by certain transactions or processes can lead to memory issues.
  
  Solution:
  
  
  Analyze Memory Usage:
  
  Use transaction codes like ST02 (Tune Summary) and ST04 (Database Performance) to analyze memory usage and identify any bottlenecks.
  Check for memory-intensive processes or transactions that may be consuming excessive resources.
  
  
  
  Adjust Configuration:
  
  If memory monitoring is not needed, you can consider adjusting the configuration settings to disable it. This can be done in the instance profile settings.
  Review the parameters related to memory management, such as abap/heap_area_dia, abap/heap_area_nondia, and abap/heap_area_total.
  
  
  
  Increase Memory Allocation:
  
  If the system is consistently running low on memory, consider increasing the memory allocation for the SAP instance. This can be done by adjusting the instance profile parameters.
  
  
  
  Optimize Code:
  
  Review custom ABAP code and programs for efficiency. Poorly optimized code can lead to excessive memory consumption.
  Use tools like the ABAP Runtime Analysis (transaction SE30) to identify and optimize memory-intensive code.
  
  
  
  Monitor System Performance:
  
  Continuously monitor system performance and memory usage to prevent future occurrences. Set up alerts for memory thresholds to proactively manage memory issues.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to memory management and the SY418 message.
  
  
  
  Related Information:
  
  SAP Memory Management: Understanding how SAP manages memory can help in troubleshooting issues. SAP uses different memory areas, such as heap memory for ABAP programs and buffer memory for database operations.
  SAP Basis Administration: Knowledge of SAP Basis administration is crucial for managing system performance and memory settings.
  Performance Tuning: Regular performance tuning and monitoring can help maintain optimal system performance and prevent memory-related issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or a qualified SAP Basis consultant for further assistance.