How To Fix RSFC_ME105 - New session could not be opened

SAP Error Message - Details

• Message type: E = Error

• Message class: RSFC_ME -

• Message number: 105

• Message text: New session could not be opened

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSFC_ME105 - New session could not be opened ?

  The SAP error message RSFC_ME105, which states "New session could not be opened," typically occurs in the context of SAP's background processing or when trying to execute a function module that requires a new session. This error can arise due to various reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  
  System Resource Limitations: The SAP system may have reached its limit for background processing sessions or dialog work processes. This can happen if there are too many concurrent jobs or if the system is under heavy load.
  
  
  Configuration Issues: The configuration settings for the SAP system may not allow for the creation of new sessions. This could be due to parameters set in the instance profile.
  
  
  Authorization Issues: The user executing the function may not have the necessary authorizations to create a new session.
  
  
  Network Issues: If there are network connectivity problems, the system may fail to establish a new session.
  
  
  System Bugs or Patches: There may be bugs in the version of SAP you are using, or you may need to apply certain patches or updates.
  
  
  Solutions:
  
  
  Check System Load: Monitor the system's workload using transaction codes like SM50 (for process overview) and SM66 (for global process overview). If the system is overloaded, consider terminating unnecessary background jobs or increasing the number of work processes.
  
  
  Review Configuration Settings: Check the instance profile parameters related to background processing and dialog work processes. Key parameters include:
  
  rdisp/wp_no_dia (Number of dialog work processes)
  rdisp/wp_no_btc (Number of background work processes)
  Ensure that these values are set appropriately for your system's workload.
  
  
  
  User Authorizations: Verify that the user has the necessary authorizations to execute the function that requires a new session. You can check this using transaction SU53 to analyze authorization failures.
  
  
  Network Connectivity: Ensure that there are no network issues affecting the connection to the SAP system. Check for any firewall settings or network configurations that might be blocking connections.
  
  
  Check for Updates: Look for any available patches or updates for your SAP system. You can check the SAP Support Portal for notes related to this error message.
  
  
  Restart the Application Server: If the issue persists and is not resolved by the above steps, consider restarting the application server to clear any temporary issues.
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes like SM21 (System Log), ST22 (Dump Analysis), and SLG1 (Application Log) to gather more information about the error context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to diagnose and resolve the RSFC_ME105 error in your SAP environment.