How To Fix /SAPAPO/MVM_SVC054 - Cannot call aRFC: system has run out of resources at &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MVM_SVC -

• Message number: 054

• Message text: Cannot call aRFC: system has run out of resources at &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MVM_SVC054 - Cannot call aRFC: system has run out of resources at &1 ?

  The SAP error message /SAPAPO/MVM_SVC054 Cannot call aRFC: system has run out of resources at &1 typically indicates that the system is unable to establish an asynchronous Remote Function Call (aRFC) due to resource limitations. This can occur in SAP Advanced Planning and Optimization (APO) or other SAP modules that utilize aRFC for communication between different systems or processes.
  Causes:
  
  Resource Exhaustion: The system may have run out of available resources such as memory, processes, or connections. This can happen if there are too many concurrent aRFC calls or if the system is under heavy load.
  Configuration Issues: The settings for the number of allowed aRFC connections or the maximum number of work processes may be misconfigured.
  System Limits: The underlying operating system or database may have reached its limits on resources.
  Long-running Processes: If there are long-running processes that are holding onto resources, it can lead to exhaustion of available resources for new aRFC calls.
  
  Solutions:
  
  Check System Resources: Monitor the system's resource usage (CPU, memory, and disk I/O) to identify any bottlenecks. Use transaction codes like SM50 (for work processes) and SM66 (for global work processes) to check the status of processes.
  Increase Resource Limits:
  
  Work Processes: Adjust the number of work processes in the SAP profile parameters (e.g., rdisp/wp_no_dia, rdisp/wp_no_btc, etc.) to allow for more concurrent processes.
  aRFC Settings: Check and adjust the settings for aRFC in transaction RZ10 or RZ11 to increase the number of allowed aRFC connections.
  
  
  Review Long-running Jobs: Identify and optimize any long-running jobs that may be consuming resources. Use transaction SM37 to monitor job statuses and analyze their execution times.
  System Configuration: Review the configuration of the underlying database and operating system to ensure they are not limiting the resources available to SAP.
  Restart Services: In some cases, restarting the SAP application server or relevant services can help free up resources.
  Check for Locks: Use transaction SM12 to check for any locks that may be preventing processes from completing and releasing resources.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps. You can search the SAP Support Portal for notes related to aRFC and resource management.
  System Monitoring Tools: Utilize SAP Solution Manager or other monitoring tools to keep track of system performance and resource usage over time.
  Performance Tuning: Consider conducting a performance tuning exercise to optimize the overall system performance and resource allocation.
  
  If the issue persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.