How To Fix /SAPAPO/SNPOPT777 - Available memory on optimization server is low (available: &1%)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SNPOPT -

• Message number: 777

• Message text: Available memory on optimization server is low (available: &1%)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SNPOPT777 - Available memory on optimization server is low (available: &1%) ?

  The SAP error message /SAPAPO/SNPOPT777 Available memory on optimization server is low (available: &1%) indicates that the optimization server in SAP Advanced Planning and Optimization (APO) is running low on available memory. This can lead to performance issues or even failures when trying to execute optimization tasks.
  Causes:
  
  High Load on the Optimization Server: The server may be handling too many requests or large datasets, consuming more memory than available.
  Insufficient Memory Allocation: The server may not have been allocated enough memory to handle the optimization tasks.
  Memory Leaks: There could be issues in the code or configuration that lead to memory not being released properly.
  Configuration Issues: Incorrect settings in the APO configuration can lead to inefficient memory usage.
  Large Data Sets: The size of the data being processed may exceed the available memory, especially if the optimization problem is complex.
  
  Solutions:
  
  
  Increase Memory Allocation:
  
  Review and increase the memory settings for the optimization server in the SAP system configuration. This can often be done in the SAP GUI under the transaction RZ10 or RZ11 for profile parameters.
  Consider increasing the physical memory on the server if possible.
  
  
  
  Optimize Data Processing:
  
  Reduce the size of the datasets being processed by filtering unnecessary data or breaking down large optimization tasks into smaller ones.
  Review the optimization model to ensure it is efficient and does not include unnecessary complexity.
  
  
  
  Monitor and Manage Load:
  
  Monitor the load on the optimization server and schedule optimization tasks during off-peak hours to reduce contention for resources.
  Use transaction SM37 to check for long-running jobs and optimize them if necessary.
  
  
  
  Check for Memory Leaks:
  
  Investigate if there are any known issues or patches related to memory leaks in the version of SAP APO you are using. Apply any relevant patches or updates.
  
  
  
  Review Configuration:
  
  Check the configuration settings in APO to ensure they are optimized for your specific use case. This includes settings related to the optimization server and memory usage.
  
  
  
  Use Alternative Optimization Methods:
  
  If the problem persists, consider using alternative optimization methods or algorithms that may be less memory-intensive.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or recommendations related to memory management in APO. You can search for relevant notes in the SAP Support Portal.
  System Monitoring: Use tools like SAP Solution Manager or transaction ST02 (buffer management) and ST04 (database performance) to monitor system performance and memory usage.
  Documentation: Refer to the official SAP documentation for APO for best practices on memory management and optimization server configuration.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the memory-related error and improve the performance of the optimization server in SAP APO.