How To Fix VIRT619 - Network TCP Retransmission Rate

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 619

• Message text: Network TCP Retransmission Rate

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 VIRT619 - Network TCP Retransmission Rate ?

  The SAP error message VIRT619, which indicates a "Network TCP Retransmission Rate," typically points to issues related to network performance and connectivity. This error suggests that there are problems with the TCP/IP communication between the SAP application server and the database or other components, leading to packet loss and retransmissions.
  Causes:
  
  Network Congestion: High traffic on the network can lead to packet loss, causing TCP to retransmit packets.
  Faulty Network Hardware: Issues with routers, switches, or network interface cards (NICs) can lead to unreliable connections.
  Configuration Issues: Incorrect network settings, such as MTU size or TCP window size, can affect performance.
  Firewall or Security Settings: Firewalls or security appliances may be dropping packets or causing delays.
  Latency: High latency in the network can lead to timeouts and retransmissions.
  Server Load: High load on the SAP application server or database server can lead to slow responses and increased retransmissions.
  
  Solutions:
  
  Network Monitoring: Use network monitoring tools to analyze traffic and identify congestion points or packet loss.
  Check Hardware: Inspect and test network hardware for faults. Replace any faulty components.
  Optimize Network Configuration: Adjust TCP settings, such as MTU size, to optimize performance. Ensure that the network is configured correctly for SAP.
  Review Firewall Settings: Ensure that firewalls are configured to allow necessary traffic without dropping packets.
  Reduce Latency: If possible, reduce the physical distance between servers or optimize routing paths.
  Load Balancing: Distribute the load across multiple servers to prevent any single server from becoming a bottleneck.
  Update Drivers and Firmware: Ensure that network drivers and firmware are up to date to benefit from performance improvements and bug fixes.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to VIRT619 for specific recommendations or patches that may address the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have experienced similar issues and what solutions they found effective.
  Network Performance Tools: Consider using tools like Wireshark or other network performance analyzers to diagnose and troubleshoot network issues.
  SAP Basis Team: Collaborate with your SAP Basis team to ensure that the SAP environment is configured optimally for network performance.
  
  By addressing the underlying causes of the VIRT619 error, you can improve network reliability and reduce the occurrence of TCP retransmissions in your SAP environment.