How To Fix ESH_HANA_ADMIN146 - The HANA server could not be reached or has not reacted (DB Conn. &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_HANA_ADMIN - ESH HANA Index Administration

• Message number: 146

• Message text: The HANA server could not be reached or has not reacted (DB Conn. &1)

What causes this issue?

When checking for the HANA version the HANA server has not been reached,
or has not been able to react.
In most cases this is a connectivity issue. The database connection "
&v1&" to the HANA server is not set up correctly, or the HANA server is
unavailable.

System Response

System cannot proceed with the actions to be performed.

How to fix this error?

Please check the HANA connection.
The HANA connection can for example be checked via the ESH connectivity
configuration report ESH_ADM_SET_TREX_DESTINATION "Set the RFC
Destination to TREX or DB Connection to HANA".
Execute "Connection Test" in the toolbar of this report.

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

Further details regarding database connection "&v1&", including check
and analysis tools, can be found in transaction "DBACOCKPIT".

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_HANA_ADMIN146 - The HANA server could not be reached or has not reacted (DB Conn. &1) ?

  The SAP error message ESH_HANA_ADMIN146 indicates that the HANA server could not be reached or has not responded. This can occur due to various reasons related to connectivity, configuration, or server status. Below are some common causes, potential solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the application server and the HANA database server.
  HANA Server Down: The HANA database server might be down or not running.
  Configuration Issues: Incorrect configuration settings in the connection parameters (e.g., hostname, port, user credentials).
  Firewall Restrictions: Firewalls may be blocking the connection to the HANA server.
  Resource Limitations: The HANA server may be overloaded or running out of resources (CPU, memory).
  Timeout Settings: The connection timeout settings may be too low, causing the connection to fail before it can be established.
  
  Solutions:
  
  Check HANA Server Status: Ensure that the HANA server is up and running. You can check this using the HANA Studio or command line tools.
  Verify Network Connectivity: Use tools like ping or telnet to check if the application server can reach the HANA server on the specified port.
  Review Connection Parameters: Double-check the connection parameters in your SAP system (e.g., hostname, port, user credentials) to ensure they are correct.
  Firewall Configuration: Ensure that any firewalls between the application server and the HANA server allow traffic on the required ports (default is 30015 for HANA).
  Monitor Resource Usage: Check the resource usage on the HANA server to ensure it is not overloaded. You may need to optimize queries or increase resources.
  Adjust Timeout Settings: If applicable, consider increasing the connection timeout settings in your SAP system to allow more time for the connection to be established.
  Check Logs: Review the logs on both the application server and the HANA server for any additional error messages or warnings that could provide more context.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to HANA connectivity issues for any known issues or patches.
  HANA Administration Guide: Refer to the HANA Administration Guide for best practices on managing and configuring HANA connections.
  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, consider reaching out to your SAP Basis team or SAP support for further assistance.