How To Fix RSDD_ZA666 - No TREX RFC connections available

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 666

• Message text: No TREX RFC connections available

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 RSDD_ZA666 - No TREX RFC connections available ?

  The SAP error message RSDD_ZA666: No TREX RFC connections available typically occurs in the context of SAP BW (Business Warehouse) when the system is unable to establish a connection to the TREX (Text Retrieval and Extraction) engine. TREX is used for full-text search and is an integral part of SAP BW for certain functionalities, such as text analysis and search capabilities.
  Causes:
  
  TREX Service Not Running: The TREX service may not be started or is down.
  RFC Connection Issues: There may be issues with the Remote Function Call (RFC) connection settings between the SAP system and the TREX server.
  Network Issues: Network problems could prevent the SAP system from reaching the TREX server.
  Configuration Errors: Incorrect configuration settings in the SAP system or TREX settings can lead to this error.
  Authorization Issues: The user may not have the necessary authorizations to access the TREX services.
  
  Solutions:
  
  
  Check TREX Service:
  
  Ensure that the TREX service is running. You can check this in the TREX administration tool or by accessing the server where TREX is installed.
  Restart the TREX service if it is not running.
  
  
  
  Verify RFC Connections:
  
  Go to transaction SM59 in the SAP GUI and check the RFC connections related to TREX.
  Test the connection to ensure it is working properly. If it fails, check the connection parameters.
  
  
  
  Network Configuration:
  
  Ensure that there are no network issues preventing communication between the SAP system and the TREX server.
  Check firewall settings and network routes.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the SAP BW system related to TREX. This includes settings in transaction RSCUSTV10 and other relevant configuration transactions.
  Ensure that the TREX server is correctly defined in the SAP BW system.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access TREX services. This may involve checking roles and profiles assigned to the user.
  
  
  
  Logs and Traces:
  
  Review the logs for any additional error messages that may provide more context. You can check the TREX logs and the SAP BW logs for any related errors.
  
  
  
  Related Information:
  
  TREX Administration: Familiarize yourself with the TREX administration tools and documentation for managing and troubleshooting TREX.
  SAP Notes: Check SAP Notes related to TREX and the specific error message for any patches or updates that may resolve the issue.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.