How To Fix QI164 - Inter-process communication error

SAP Error Message - Details

• Message type: E = Error

• Message class: QI - Notifications for interface modules for connecting subsyst.

• Message number: 164

• Message text: Inter-process communication error

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message QI164 - Inter-process communication error ?

  The SAP error message QI164, which indicates an "Inter-process communication error," typically arises in the context of Quality Management (QM) processes. This error can occur due to various reasons, including issues with the communication between different SAP processes or components, network problems, or configuration issues.
  Causes of QI164 Error
  
  
  Network Issues: Problems with the network can disrupt communication between different SAP instances or between the SAP application and the database.
  
  
  Configuration Errors: Incorrect settings in the SAP system configuration can lead to communication failures. This includes settings related to the Quality Management module or other integrated modules.
  
  
  System Load: High system load or resource constraints can lead to timeouts or failures in inter-process communication.
  
  
  Database Issues: Problems with the database, such as locks or performance issues, can also lead to communication errors.
  
  
  Transport Layer Issues: If there are issues with the transport layer (e.g., RFC connections), it can cause inter-process communication errors.
  
  
  Software Bugs: Occasionally, bugs in the SAP software or specific patches may lead to unexpected errors.
  
  
  Solutions to QI164 Error
  
  
  Check Network Connectivity: Ensure that there are no network issues affecting communication between SAP components. You can use tools like ping or traceroute to diagnose network problems.
  
  
  Review Configuration Settings: Verify the configuration settings in the SAP system, especially those related to the Quality Management module. Ensure that all necessary parameters are correctly set.
  
  
  Monitor System Performance: Check the system performance and resource utilization. If the system is under heavy load, consider optimizing performance or scaling resources.
  
  
  Database Health Check: Perform a health check on the database to ensure it is functioning correctly. Look for locks, long-running queries, or performance bottlenecks.
  
  
  Check RFC Connections: Use transaction code SM59 to check the Remote Function Call (RFC) connections. Ensure that all connections are correctly configured and operational.
  
  
  Review SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that address the QI164 error. Applying the latest patches may resolve known issues.
  
  
  Consult Logs: Review the system logs (transaction codes SM21 for system logs and ST22 for dump analysis) for any additional error messages or clues that could help diagnose the issue.
  
  
  Restart Services: In some cases, restarting the affected SAP services or instances may resolve temporary communication issues.
  
  
  Related Information
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs or screenshots.
  
  
  Documentation: Refer to the official SAP documentation for the Quality Management module for more insights into configuration and troubleshooting.
  
  
  Community Forums: Engage with the SAP community forums or user groups where you can find discussions related to similar issues and potential solutions shared by other users.
  
  
  By following these steps, you should be able to diagnose and potentially resolve the QI164 inter-process communication error in your SAP system.