How To Fix ESH_DB016 - Trex-connection is used in spite of HANA-data base

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_DB - ES: Dashboard

• Message number: 016

• Message text: Trex-connection is used in spite of HANA-data base

What causes this issue?

Although the system's data base management system is HANA, you are using
a Trex for Enterprise Search - this does not make sense.

System Response

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

How to fix this error?

Use report ESH_ADM_SET_TREX_DESTINATION to switch the Enterprise Search
connection from Trex to HANA. This implies that the connectors need to
be deleted in the course of the process.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_DB016 - Trex-connection is used in spite of HANA-data base ?

  The SAP error message ESH_DB016 indicates that there is an issue with the connection to the TREX (Text Retrieval and Extraction) search engine when using a HANA database. This error typically arises in the context of SAP Enterprise Search or SAP HANA when the system is configured to use TREX for search operations, but the underlying database is HANA, which may not require or support TREX in the same way.
  Cause:
  
  Configuration Issue: The system may be incorrectly configured to use TREX for search operations when it should be using HANA's native capabilities.
  Legacy Settings: If the system was previously set up to use TREX and has since migrated to HANA, some settings may not have been updated accordingly.
  Incompatibility: There may be an incompatibility between the version of SAP you are using and the configuration of TREX with HANA.
  
  Solution:
  
  
  Check Configuration: 
  
  Go to the SAP system configuration and check the settings for the search engine. Ensure that it is set to use HANA instead of TREX.
  You can do this in the SAP GUI by navigating to the relevant configuration settings for Enterprise Search.
  
  
  
  Update Search Settings:
  
  If you are using SAP HANA, ensure that the search settings are updated to utilize HANA's capabilities. This may involve changing settings in the SAP NetWeaver or HANA Studio.
  
  
  
  Reconfigure TREX:
  
  If you still need to use TREX for some reason, ensure that it is properly configured to work with HANA. This may involve checking the TREX configuration and ensuring that it is compatible with the HANA database.
  
  
  
  Check for Notes and Patches:
  
  Look for SAP Notes or patches that address this specific error. SAP frequently releases updates that may resolve compatibility issues or bugs.
  
  
  
  Consult Documentation:
  
  Review the official SAP documentation for Enterprise Search and HANA to ensure that you are following the recommended practices for configuration.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking configurations and applying updates, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may provide additional insights or solutions for this error.
  System Logs: Check the system logs for any additional error messages or warnings that may provide more context about the issue.
  Version Compatibility: Ensure that your version of SAP HANA and TREX are compatible and supported by your SAP system.
  
  By following these steps, you should be able to resolve the ESH_DB016 error and ensure that your SAP system is correctly configured to use HANA for search operations.