How To Fix GW909 - Gateway; required overflow area

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 909

• Message text: Gateway; required overflow area

What causes this issue?

Required overflow area of the gateway. The overflow area is defined by
profile parameter <ZH>gw/max_overflow_size</> (see parameter
documentation in RZ11).

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 GW909 - Gateway; required overflow area ?

  The SAP error message GW909 ("Gateway; required overflow area") typically occurs in the context of SAP Gateway when there is insufficient memory allocated for the gateway to handle the requests being processed. This can happen due to various reasons, such as high load on the system, insufficient configuration, or memory leaks.
  Cause:
  
  Insufficient Memory Allocation: The gateway may not have enough memory allocated to handle the current workload.
  High Load: A sudden spike in the number of requests or connections can lead to memory overflow.
  Configuration Issues: Incorrect settings in the SAP Gateway configuration can lead to inadequate memory being allocated.
  Memory Leaks: Issues in the application or system can lead to memory not being released properly, causing overflow.
  
  Solution:
  
  
  Increase Memory Allocation:
  
  You can increase the memory allocated to the SAP Gateway by adjusting the parameters in the instance profile. Look for parameters like gw/Max_Connections, gw/Max_Heap_Size, and gw/Max_Overflow_Area.
  Use transaction RZ10 to modify the instance profile and then restart the instance for changes to take effect.
  
  
  
  Monitor and Optimize Load:
  
  Use transaction SM50 or SM66 to monitor the active processes and identify any long-running or stuck processes that may be consuming resources.
  Optimize the application logic to reduce the load on the gateway.
  
  
  
  Check Configuration:
  
  Review the gateway configuration settings in transaction SMGW to ensure they are set correctly.
  Ensure that the gateway is configured to handle the expected number of connections.
  
  
  
  System Maintenance:
  
  Regularly perform system maintenance to clear out any unnecessary data or processes that may be consuming memory.
  Check for any updates or patches from SAP that may address known issues related to memory management.
  
  
  
  Analyze Logs:
  
  Check the gateway logs for any additional error messages or warnings that may provide more context on the issue. You can access the logs via transaction SMGW and look for the "Log" button.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may provide specific guidance or fixes related to the GW909 error.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SMGW: Gateway Monitor
  RZ10: Profile Maintenance
  SM50: Work Process Overview
  SM66: Global Work Process Overview
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on gateway configuration and performance tuning.
  
  
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to resolve the GW909 error and ensure that your SAP Gateway operates smoothly.