How To Fix /PF1/MSG_EH309 - Communication failure for Parallel Process

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_EH -

• Message number: 309

• Message text: Communication failure for Parallel Process

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 /PF1/MSG_EH309 - Communication failure for Parallel Process ?

  The SAP error message /PF1/MSG_EH309 Communication failure for Parallel Process typically indicates that there is a communication issue when trying to execute a parallel processing task in SAP. This can occur in various scenarios, such as when using background jobs, parallel processing in reports, or when using the SAP Business Workflow.
  Causes:
  
  Network Issues: There may be network connectivity problems between the application server and the database or between different application servers.
  System Configuration: Incorrect configuration settings for parallel processing in the SAP system can lead to communication failures.
  Resource Limitations: Insufficient system resources (CPU, memory) can cause processes to fail when trying to communicate in parallel.
  Timeout Settings: If the timeout settings for communication are too low, it may lead to premature termination of processes.
  Locks or Deadlocks: If there are locks on the resources being accessed, it can lead to communication failures.
  Transport Layer Issues: Problems in the transport layer, such as issues with RFC (Remote Function Call) connections, can also cause this error.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the servers involved. You can use tools like ping or traceroute to diagnose connectivity.
  Review System Configuration: Check the configuration settings for parallel processing in the SAP system. Ensure that the settings are appropriate for your environment.
  Monitor System Resources: Use transaction codes like SM50 or SM66 to monitor system resources and check for any bottlenecks. If necessary, increase the resources available to the system.
  Adjust Timeout Settings: Review and adjust the timeout settings for communication in the SAP system. This can often be done in the RFC destination settings.
  Check for Locks: Use transaction SM12 to check for any locks that may be causing the issue. If there are unnecessary locks, they can be released.
  Review RFC Connections: Check the RFC connections using transaction SM59 to ensure they are correctly configured and operational.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates their knowledge base with solutions for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM50, SM66, SM12, and SM59 for monitoring and troubleshooting.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed logs and error messages to facilitate troubleshooting.
  Documentation: Review SAP documentation related to parallel processing and communication settings for more in-depth understanding and configuration guidelines.
  
  By following these steps, you should be able to diagnose and resolve the communication failure for parallel processes in SAP.