Troubleshooting WSAECONNREFUSED: SAP GUI Connection Issue on HP-UX

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Summary: Learn how to address WSAECONNREFUSED error when SAP GUI can't connect to SAP server on HP-UX. Explore potential solutions and understand the role of inetd.conf in resolving connection issues.
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Troubleshooting WSAECONNREFUSED: SAP GUI Connection Issue on HP-UX

If you've encountered the WSAECONNREFUSED error while attempting to connect the SAP GUI to a SAP server on an HP-UX system, it can be a frustrating experience. This error indicates that the connection was actively refused by the server, pointing to a potential problem in the communication setup. In this guide, we'll explore the steps to troubleshoot and resolve this issue, with a focus on the inetd.conf file.

Understanding WSAECONNREFUSED

The WSAECONNREFUSED error is a Windows Sockets specification error code that signifies the target machine actively refused the connection. In the context of SAP GUI and HP-UX, this error suggests that the SAP server is not accepting the incoming connection from the GUI.

Checking SAP GUI Configuration

Before delving into system configurations, it's essential to ensure that the SAP GUI configuration is accurate. Verify the hostname, port number, and other connection details in the SAP GUI settings. A simple misconfiguration at this level could lead to a connection refusal.

Exploring inetd.conf

The inetd.conf file plays a crucial role in managing network services on HP-UX systems. It acts as the configuration file for the Internet services daemon (inetd), which listens for incoming network requests and launches the appropriate service. To address the WSAECONNREFUSED error, follow these steps related to inetd.conf:

Check SAP Service Entry:
Open the inetd.conf file using a text editor and look for the entry related to the SAP service. Ensure that the service is correctly configured and that the port specified matches the one expected by the SAP GUI.

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Replace placeholders such as <SAPSID>, <SAP_EXECUTABLE_PATH>, <SAP_EXECUTABLE>, and <SAP_PROFILE_PATH> with the actual values for your SAP system.

Restart inetd:
After making any changes to inetd.conf, restart the inetd daemon to apply the new configuration.

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Check Firewall Settings:
Ensure that there are no firewall rules blocking the communication on the specified SAP port. Adjust firewall settings if necessary.

Verifying SAP Server Status

Confirm that the SAP server is up and running. Check the SAP system logs for any errors or issues that might be preventing the server from accepting connections.

Conclusion

Troubleshooting the WSAECONNREFUSED error on SAP GUI connecting to a SAP server on HP-UX involves a systematic approach. By verifying SAP GUI configurations, inspecting the inetd.conf file, and ensuring the SAP server's status, you can identify and address the root cause of the connection issue.

Always exercise caution when modifying system configuration files, and consider consulting your IT department or SAP support for additional assistance.

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