How To Fix GW906 - Number of gateway work processes; only for SNA

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 906

• Message text: Number of gateway work processes; only for SNA

What causes this issue?

This MTE node gives information about which gateway work processes
exist.

How to fix this error?

If a value is near 100%, the maximum number of clients can be changed
using the profile parameter <ZH>gw/max_wp</> (see the parameter
documentation in RZ11).

Procedure for System Administrators

To administrate gateway connections, call transaction SMGW on the
server in question.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GW906 - Number of gateway work processes; only for SNA ?

  The SAP error message GW906 indicates an issue related to the number of gateway work processes configured for SNA (Systems Network Architecture) communication. This error typically arises when the number of gateway work processes is insufficient to handle the incoming requests or when there is a misconfiguration in the SAP system.
  Cause:
  
  Insufficient Gateway Work Processes: The number of gateway work processes configured in the SAP system is lower than what is required to handle the current load.
  Configuration Issues: There may be incorrect settings in the SAP profile parameters related to the gateway.
  High Load: A sudden increase in the number of requests or connections can lead to this error if the system is not adequately provisioned.
  Network Issues: Problems in the network can also lead to delays and timeouts, causing the gateway to become overwhelmed.
  
  Solution:
  
  
  Increase Gateway Work Processes:
  
  You can increase the number of gateway work processes in the SAP system profile. This is done by modifying the gw_count parameter in the instance profile.
  Example: If the current setting is gw_count = 2, you might increase it to gw_count = 4 or higher, depending on your system's capacity and requirements.
  
  
  
  Check System Load:
  
  Monitor the system load and performance metrics to determine if the current configuration is adequate.
  Use transaction codes like SM50 or SM66 to check the status of work processes.
  
  
  
  Review Configuration:
  
  Ensure that the SNA configuration is correctly set up in the SAP system.
  Check for any other parameters that might affect the gateway processes, such as gw/enable_sna.
  
  
  
  Restart the Gateway:
  
  After making changes to the configuration, restart the SAP instance to apply the new settings.
  
  
  
  Network Optimization:
  
  Investigate any potential network issues that could be causing delays or increased load on the gateway.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the GW906 error for any specific recommendations or patches that may address the issue.
  Documentation: Refer to the SAP Basis documentation for detailed information on configuring gateway work processes and SNA settings.
  Monitoring Tools: Utilize SAP monitoring tools to keep track of system performance and identify bottlenecks.
  
  By addressing the configuration and ensuring that the system is adequately provisioned for the expected load, you can resolve the GW906 error and improve the overall performance of the SAP system.