How To Fix /PF1/MSG_EH_P338 - Resource error; not enough dialogue processes for parallel process

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_EH_P -

• Message number: 338

• Message text: Resource error; not enough dialogue processes for parallel process

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PF1/MSG_EH_P338 - Resource error; not enough dialogue processes for parallel process ?

  The SAP error message /PF1/MSG_EH_P338 Resource error; not enough dialogue processes for parallel process typically indicates that the SAP system has run out of available dialog work processes to handle the incoming requests. This can occur when there are too many concurrent users or processes trying to access the system, and the configured number of dialog work processes is insufficient to handle the load.
  Causes:
  
  Insufficient Dialog Work Processes: The number of dialog work processes configured in the SAP system is too low for the current workload.
  High User Load: A sudden spike in user activity or background jobs can exhaust the available dialog processes.
  Long-Running Transactions: If certain transactions are taking a long time to complete, they can tie up dialog processes, leading to resource shortages.
  Configuration Issues: Incorrect configuration settings in the SAP instance profile can lead to inadequate resource allocation.
  
  Solutions:
  
  
  Increase Dialog Work Processes:
  
  You can increase the number of dialog work processes in the SAP instance profile. This can be done by modifying the rdisp/wp_no_dia parameter in the instance profile.
  After making changes, restart the SAP instance for the changes to take effect.
  
  
  
  Monitor and Optimize Long-Running Transactions:
  
  Use transaction codes like ST22 (Dump Analysis) and SM50 (Process Overview) to identify long-running processes and analyze their performance.
  Optimize the code or processes that are taking too long to complete.
  
  
  
  Check for Background Jobs:
  
  Review background jobs using transaction SM37 to see if there are any jobs that are consuming excessive resources.
  Adjust the scheduling of background jobs to off-peak hours if necessary.
  
  
  
  User Load Management:
  
  If possible, manage user access during peak times to reduce the load on the system.
  Implement load balancing if you have multiple application servers.
  
  
  
  System Monitoring:
  
  Regularly monitor system performance using transaction ST03N (Workload Analysis) to understand usage patterns and adjust resources accordingly.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM50: Process Overview
  SM66: Global Work Process Overview
  ST03N: Workload Analysis
  ST22: Dump Analysis
  SM37: Job Monitoring
  
  
  
  SAP Parameters:
  
  rdisp/wp_no_dia: Number of dialog work processes.
  rdisp/wp_no_btc: Number of background work processes.
  rdisp/wp_no_vb: Number of update work processes.
  
  
  
  Documentation: Refer to the SAP Help Portal for detailed documentation on system performance tuning and configuration.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the error and improve the performance of your SAP system.