How To Fix ESH_HANA_ADMIN148 - SQL Connection to HANA database (DB conn: &1) could not be opened

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_HANA_ADMIN - ESH HANA Index Administration

• Message number: 148

• Message text: SQL Connection to HANA database (DB conn: &1) 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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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_HANA_ADMIN148 - SQL Connection to HANA database (DB conn: &1) could not be opened ?

  The SAP error message ESH_HANA_ADMIN148 indicates that there is an issue with establishing a SQL connection to the HANA database. This can occur due to various reasons. Below are some common causes, potential solutions, and related information to help troubleshoot the issue.
  Causes
  
  
  Network Issues: There may be network connectivity problems between the application server and the HANA database server.
  
  
  Database Configuration: The HANA database might not be configured correctly, or the database service may not be running.
  
  
  Authentication Issues: Incorrect credentials (username/password) may be used to connect to the HANA database.
  
  
  Firewall Restrictions: Firewalls may be blocking the connection to the HANA database.
  
  
  Database Instance Down: The HANA database instance may be down or not reachable.
  
  
  Resource Limitations: The HANA database may be experiencing resource limitations (e.g., memory, CPU) that prevent new connections.
  
  
  Connection Pooling Issues: If connection pooling is used, there may be issues with the pool configuration or limits being reached.
  
  
  Solutions
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to check if the application server can reach the HANA database server on the required port (default is 30015 for HANA).
  
  
  
  Verify Database Status:
  
  Log in to the HANA database using HANA Studio or a similar tool to ensure that the database is up and running.
  
  
  
  Check Credentials:
  
  Verify that the username and password used for the connection are correct. Ensure that the user has the necessary permissions to access the database.
  
  
  
  Review Firewall Settings:
  
  Ensure that any firewalls between the application server and the HANA database are configured to allow traffic on the required ports.
  
  
  
  Monitor Database Resources:
  
  Check the HANA database for resource usage and ensure that it is not overloaded. You can use HANA Studio or SQL commands to monitor resource usage.
  
  
  
  Connection Pool Configuration:
  
  If using connection pooling, check the configuration settings to ensure that the maximum number of connections is not exceeded.
  
  
  
  Check Logs:
  
  Review the application server logs and HANA database logs for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Restart Services:
  
  If all else fails, consider restarting the HANA database services or the application server to clear any transient issues.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to HANA connectivity issues for any known issues or patches that may apply.
  Documentation: Refer to the official SAP HANA documentation for detailed information on configuration and troubleshooting.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and error messages.
  
  By following these steps, you should be able to identify and resolve the cause of the ESH_HANA_ADMIN148 error message.