How To Fix PO765 - TCP initialization failed

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 765

• Message text: TCP initialization failed

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO765 - TCP initialization failed ?

  The SAP error message "PO765 TCP initialization failed" typically indicates an issue with the TCP/IP connection setup in the SAP system. This error can occur during various operations, such as when trying to connect to a database or when starting the SAP application server.
  Causes:
  
  Network Configuration Issues: Incorrect network settings or configurations can prevent the SAP system from establishing a TCP connection.
  Firewall Restrictions: Firewalls may block the necessary ports required for SAP communication.
  SAP Kernel Issues: Problems with the SAP kernel or outdated kernel versions can lead to TCP initialization failures.
  Host Name Resolution: Issues with DNS or host name resolution can prevent the SAP system from connecting to the required services.
  Resource Limitations: Insufficient system resources (like memory or CPU) can also lead to this error.
  
  Solutions:
  
  
  Check Network Configuration:
  
  Verify the TCP/IP settings in the SAP profile parameters.
  Ensure that the correct IP address and port are being used.
  
  
  
  Firewall Settings:
  
  Check firewall settings to ensure that the necessary ports (e.g., 3200 for SAP GUI) are open and not blocked.
  
  
  
  Update SAP Kernel:
  
  Ensure that you are using a supported and up-to-date version of the SAP kernel. If necessary, apply the latest patches.
  
  
  
  Host Name Resolution:
  
  Check the /etc/hosts file (on Unix/Linux) or the DNS settings to ensure that the host names are correctly resolved.
  Use the ping command to verify connectivity to the host.
  
  
  
  Check System Resources:
  
  Monitor system resources to ensure that there are enough CPU and memory available for the SAP instance to start.
  
  
  
  Review SAP Logs:
  
  Check the SAP system logs (dev_w0, dev_r0, etc.) for more detailed error messages that can provide additional context for the failure.
  
  
  
  Restart SAP Services:
  
  Sometimes, simply restarting the SAP services or the entire server can resolve transient issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to TCP initialization issues for specific patches or updates that may address the problem.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Refer to the official SAP documentation for detailed configuration guidelines and troubleshooting steps.
  
  If the issue persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.