How To Fix BGRFC656 - Time stamp of the oldest bgRFC units

SAP Error Message - Details

• Message type: E = Error

• Message class: BGRFC - qRFC - New Background RFC

• Message number: 656

• Message text: Time stamp of the oldest bgRFC units

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message BGRFC656 - Time stamp of the oldest bgRFC units ?

  The SAP error message BGRFC656 indicates that there is an issue with the background RFC (bgRFC) processing in the SAP system. Specifically, this error message is related to the time stamp of the oldest bgRFC units, which may indicate that there are units that have not been processed for a significant amount of time. This can lead to performance issues or even system instability if not addressed.
  Cause:
  
  
  Stale bgRFC Units: The error typically arises when there are bgRFC units that have not been processed for an extended period. This can happen due to various reasons, such as:
  
  Network issues preventing communication with the target system.
  Configuration issues in the bgRFC setup.
  Long-running or stuck processes that are preventing the bgRFC units from being executed.
  Resource constraints on the system (e.g., memory, CPU).
  
  
  
  System Load: High system load or resource contention can also lead to delays in processing bgRFC units.
  
  
  Configuration Issues: Incorrect configuration of bgRFC settings or the underlying communication settings can lead to issues in processing.
  
  
  Solution:
  
  
  Monitor bgRFC Queue: Use transaction code SM58 to monitor the bgRFC queue and identify any stuck or long-running units. You can also use transaction SLG1 to check for logs related to bgRFC processing.
  
  
  Check System Resources: Ensure that the system has adequate resources (CPU, memory, etc.) to handle the bgRFC processing. If the system is under heavy load, consider optimizing performance or scaling resources.
  
  
  Reprocess Stuck Units: If you identify any stuck bgRFC units, you can attempt to reprocess them. This can often be done by using transaction SBGRFC to manage and monitor bgRFC units.
  
  
  Adjust Timeout Settings: If necessary, adjust the timeout settings for bgRFC processing to allow for longer processing times if the units are expected to take longer.
  
  
  Check Configuration: Review the bgRFC configuration settings in the system to ensure they are set up correctly. This includes checking the RFC destinations and ensuring they are reachable.
  
  
  System Restart: In some cases, a system restart may help clear any temporary issues that are causing bgRFC units to be stuck.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes that may address specific issues related to bgRFC processing or the error message BGRFC656.
  
  
  Related Information:
  
  
  bgRFC Overview: Background RFC (bgRFC) is a mechanism in SAP that allows asynchronous communication between different SAP systems or between different processes within the same system. It is designed to handle high volumes of data and ensure reliable message delivery.
  
  
  Transaction Codes:
  
  SM58: Monitor transactional RFC (tRFC) and bgRFC.
  SBGRFC: Manage and monitor bgRFC units.
  SLG1: View application logs for troubleshooting.
  
  
  
  Performance Monitoring: Regularly monitor the bgRFC queues and system performance to prevent issues from arising in the future.
  
  
  By following these steps, you should be able to diagnose and resolve the issue related to the BGRFC656 error message in your SAP system.