How To Fix BGRFC066 - bgRFC needs more than two dialog WPs; only &1 WP(s) currently available

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 066

• Message text: bgRFC needs more than two dialog WPs; only &1 WP(s) currently available

What causes this issue?

The system requires more than two dialog work processes to start the
bgRFC scheduler. There are fewer than three dialog work processes
available on this application server.

System Response

No bgRFC schedulers are started.

How to fix this error?

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

Procedure for System Administrators

Provide more dialog work processes.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC066 - bgRFC needs more than two dialog WPs; only &1 WP(s) currently available ?

  The SAP error message BGRFC066 indicates that the background Remote Function Call (bgRFC) processing requires more than two dialog work processes (WPs) to function properly, but only a limited number of dialog WPs are currently available. This situation can lead to issues in processing bgRFC calls, which are essential for asynchronous communication between different SAP systems or within the same system.
  Cause:
  
  Insufficient Dialog Work Processes: The system is configured with a limited number of dialog work processes, which are required for handling user requests and background processing.
  High Load on the System: If the system is under heavy load, it may not have enough free dialog WPs available to handle bgRFC requests.
  Configuration Issues: The SAP system may not be optimally configured for the expected workload, leading to a shortage of available dialog WPs.
  Long-running Transactions: If there are long-running transactions or processes that are occupying dialog WPs, it can lead to a shortage of available processes for bgRFC.
  
  Solution:
  
  
  Increase Dialog Work Processes:
  
  Go to the SAP system profile parameters and increase the number of dialog work processes. This can be done in transaction RZ10 or through the instance profile settings.
  After making changes, restart the SAP instance for the changes to take effect.
  
  
  
  Monitor System Load:
  
  Use transaction SM50 to monitor the status of work processes and identify any long-running or stuck processes that may be consuming resources.
  If necessary, terminate or optimize these processes to free up dialog WPs.
  
  
  
  Optimize Background Processing:
  
  Review and optimize background jobs and processes to ensure they are not consuming excessive resources.
  Use transaction SM37 to analyze and manage background jobs.
  
  
  
  Check for System Bottlenecks:
  
  Investigate other system resources (CPU, memory, I/O) to ensure that there are no bottlenecks affecting the performance of dialog WPs.
  Consider scaling up hardware resources if the system is consistently under heavy load.
  
  
  
  Review Configuration:
  
  Ensure that the SAP system is configured according to best practices for the expected workload. This includes checking the number of work processes and their distribution.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  RZ10: To change instance profile parameters.
  SM50: To monitor work processes.
  SM37: To monitor background jobs.
  
  
  
  SAP Notes: Check for relevant SAP Notes that may provide additional guidance or patches related to bgRFC processing and work process management.
  
  
  Documentation: Refer to SAP documentation on bgRFC and work process management for best practices and configuration guidelines.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the BGRFC066 error and ensure smooth bgRFC processing in your SAP system.