How To Fix /STTPEC/INT_MSG017 - No free sessions available for parallel process

SAP Error Message - Details

• Message type: E = Error

• Message class: /STTPEC/INT_MSG -

• Message number: 017

• Message text: No free sessions available for parallel process

Self-Explanatory Message

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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 /STTPEC/INT_MSG017 - No free sessions available for parallel process ?

  The SAP error message /STTPEC/INT_MSG017 No free sessions available for parallel process typically indicates that the system has reached its limit for parallel processing sessions. This can occur in various scenarios, such as when multiple background jobs or parallel processing requests are being executed simultaneously, and the system does not have enough available sessions to handle the new requests.
  Causes:
  
  Session Limit Reached: The maximum number of parallel processing sessions configured in the system has been reached.
  High Load: A high volume of background jobs or parallel processing requests is being executed, consuming all available sessions.
  Configuration Issues: The system may not be optimally configured to handle the expected load, leading to session exhaustion.
  Long-Running Processes: Some processes may be taking longer than expected, holding onto sessions and preventing new ones from being allocated.
  
  Solutions:
  
  
  Increase Session Limits:
  
  You can increase the number of parallel processing sessions allowed in the system. This can be done by adjusting the relevant parameters in the SAP system configuration (e.g., rdisp/wp_no_dia for dialog work processes).
  Use transaction RZ10 to change the profile parameters and then restart the instance for the changes to take effect.
  
  
  
  Monitor and Optimize Background Jobs:
  
  Use transaction SM37 to monitor background jobs and identify any long-running or stuck jobs. You may need to terminate or optimize these jobs to free up sessions.
  Review the job scheduling to ensure that jobs are not overlapping excessively.
  
  
  
  Review System Performance:
  
  Check system performance metrics to identify bottlenecks. Use transaction ST03N to analyze workload and performance.
  Consider optimizing the code or processes that are consuming excessive resources.
  
  
  
  Adjust Job Scheduling:
  
  Stagger the scheduling of background jobs to avoid peak loads that can exhaust session availability.
  Use job variants or scheduling strategies to manage job execution more effectively.
  
  
  
  Check for Configuration Issues:
  
  Review the configuration settings related to parallel processing and ensure they are set according to the system's capacity and expected workload.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to this error message.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM37: Monitor background jobs.
  RZ10: Change profile parameters.
  ST03N: Analyze workload and performance.
  
  
  
  SAP Documentation: Refer to SAP Help Portal for documentation on managing background jobs and parallel processing.
  
  
  System Monitoring Tools: Utilize tools like SAP Solution Manager for comprehensive monitoring and performance analysis.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the error and improve the handling of parallel processing sessions in your SAP system.