How To Fix ESH_ENG_CDS_HANA003 - Invalid connection ID, or connection failed

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_ENG_CDS_HANA - ES-CDS/HANA

• Message number: 003

• Message text: Invalid connection ID, or connection failed

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 ESH_ENG_CDS_HANA003 - Invalid connection ID, or connection failed ?

  The SAP error message ESH_ENG_CDS_HANA003 typically indicates an issue with the connection to the HANA database, which is often related to the SAP Enterprise Search or the SAP HANA database itself. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Invalid Connection ID: The connection ID specified in the configuration might be incorrect or not defined in the system.
  Connection Failure: The connection to the HANA database might be down or unreachable due to network issues, database downtime, or incorrect credentials.
  Configuration Issues: There may be misconfigurations in the SAP system or the HANA database settings.
  Authorization Issues: The user credentials used for the connection may not have the necessary permissions to access the HANA database.
  HANA Database Issues: The HANA database itself may be experiencing issues, such as being in a locked state or having insufficient resources.
  
  Solutions:
  
  
  Check Connection ID:
  
  Verify that the connection ID used in the configuration is correct and exists in the system.
  Go to the transaction code DBACOCKPIT or SM59 to check the connection settings.
  
  
  
  Test Connection:
  
  Use the DBACOCKPIT or SM59 transaction to test the connection to the HANA database. This can help identify if the connection is working properly.
  
  
  
  Review Configuration:
  
  Ensure that the configuration settings for the HANA database connection are correct, including host, port, and database name.
  Check the settings in the relevant configuration transactions (e.g., SICF, SE80, etc.).
  
  
  
  Check User Credentials:
  
  Verify that the user credentials used for the connection have the necessary permissions to access the HANA database.
  Ensure that the user is not locked or expired.
  
  
  
  Monitor HANA Database:
  
  Check the status of the HANA database to ensure it is running and accessible.
  Look for any performance issues or resource constraints that may be affecting the database.
  
  
  
  Network Issues:
  
  Ensure that there are no network issues preventing access to the HANA database.
  Check firewall settings and network configurations.
  
  
  
  Consult Logs:
  
  Review the application and database logs for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for guidance on configuring HANA connections and troubleshooting connection issues.
  Support: If the issue persists, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the steps you have taken to resolve it.
  
  By following these steps, you should be able to identify and resolve the cause of the ESH_ENG_CDS_HANA003 error.