How To Fix /SAPAPO/PP_OPTIMIZER777 - Available memory on optimization server is low (available: &1%)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PP_OPTIMIZER -

• Message number: 777

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

Self-Explanatory Message

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• What is the cause and solution for SAP error message /SAPAPO/PP_OPTIMIZER777 - Available memory on optimization server is low (available: &1%) ?

  The SAP error message /SAPAPO/PP_OPTIMIZER777 indicates that the available memory on the optimization server is low, which can affect the performance of the SAP APO (Advanced Planning and Optimization) system, particularly during optimization runs. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Insufficient Memory Allocation: The optimization server may not have enough memory allocated to handle the current optimization task.
  Large Data Volume: The size of the data being processed (e.g., large planning areas, numerous products, or complex constraints) may exceed the available memory.
  Concurrent Processes: Multiple optimization processes running simultaneously can consume memory resources, leading to low available memory for new tasks.
  Memory Leaks: There may be memory leaks in the application or configuration issues that prevent the efficient use of memory.
  
  Solutions:
  
  
  Increase Memory Allocation:
  
  Review and increase the memory settings for the optimization server in the SAP system configuration. This can typically be done in the SAP GUI under the transaction RZ10 or RZ11 for profile parameters.
  Consider increasing the abap/heap_area_total parameter to allocate more memory to the ABAP runtime environment.
  
  
  
  Optimize Data Volume:
  
  Reduce the size of the data being processed by filtering out unnecessary data or breaking down large optimization tasks into smaller, more manageable ones.
  Review the planning area and ensure that only relevant data is included in the optimization run.
  
  
  
  Manage Concurrent Processes:
  
  Limit the number of concurrent optimization processes running on the server. This can be done by scheduling optimization jobs during off-peak hours or staggering their execution.
  Monitor and manage background jobs in transaction SM37 to ensure that there are no unnecessary jobs consuming memory.
  
  
  
  Check for Memory Leaks:
  
  Investigate the system for potential memory leaks or inefficiencies in the code. This may require the assistance of SAP Basis or development teams to analyze memory usage.
  Regularly monitor memory usage and performance metrics to identify trends or issues.
  
  
  
  System Upgrade:
  
  If the hardware resources are consistently insufficient, consider upgrading the server hardware (e.g., adding more RAM) to better accommodate the demands of the optimization processes.
  
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to memory management in APO. You can search the SAP Support Portal for notes related to /SAPAPO/PP_OPTIMIZER777.
  Performance Monitoring: Use transaction ST02 (Buffer Monitor) and ST04 (Database Performance Analysis) to monitor memory usage and identify bottlenecks.
  Documentation: Review SAP documentation on memory management and optimization server configuration for best practices and recommendations.
  
  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 your SAP APO optimization processes.