SAP connector failed, use of port number 3350

This port is used to provide a range of connections to SAP gateway for RFC (Remote Function Call) connection. Port 3350 is commonly used by SAP systems for gateway communication and connection pooling.

Common Causes and Solutions

If you are encountering SAP connector failures related to port 3350, here are the primary troubleshooting steps ?

Network Resolution Issues

Try to resolve your server name with nslookup command to verify DNS resolution ?

nslookup your-sap-server-name

If DNS resolution fails, try connecting to the IP address instead of the server name in your SAP connection configuration.

Port Connectivity Check

Verify that port 3350 is accessible from your client machine ?

telnet sap-server-ip 3350

SAP Gateway Configuration

Ensure the SAP gateway is properly configured and running. Check the gateway status using transaction SMGW in your SAP system to verify that the gateway service is active and port 3350 is available for RFC connections.

Additional Troubleshooting Steps

If the above solutions don't resolve the issue ?

• Verify firewall settings allow traffic on port 3350
• Check SAP system logs for gateway-related errors
• Ensure proper RFC destination configuration in transaction SM59
• Validate user permissions for RFC connections

Conclusion

SAP connector failures on port 3350 are typically resolved through network troubleshooting, proper DNS resolution, and verifying SAP gateway configuration. Start with basic connectivity tests before moving to more complex SAP system configurations.