How To Fix ESH_HANA_ADMIN237 - Selected node is already used as master node

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_HANA_ADMIN - ESH HANA Index Administration

• Message number: 237

• Message text: Selected node is already used as master node

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_HANA_ADMIN237 - Selected node is already used as master node ?

  The SAP error message ESH_HANA_ADMIN237: Selected node is already used as master node typically occurs in the context of SAP HANA when you are trying to perform an operation that involves configuring or managing nodes in a distributed HANA system. This error indicates that the node you are trying to designate as a master node is already assigned as a master node for another service or configuration.
  Cause:
  
  Node Configuration Conflict: The node you are attempting to set as the master is already configured as a master node for another service or instance.
  Incorrect Node Selection: You may have selected a node that is not eligible to be a master due to existing configurations.
  System Misconfiguration: There may be a misconfiguration in the HANA system that is causing the node to be recognized as a master node when it should not be.
  
  Solution:
  
  
  Check Current Node Configuration:
  
  Use the SAP HANA Studio or HANA Cockpit to check the current configuration of the nodes in your HANA system.
  Identify which node is currently set as the master node and ensure that you are not trying to set the same node again.
  
  
  
  Change Node Assignment:
  
  If you need to change the master node, you will first need to remove the current master designation from the existing master node before assigning a new master node.
  Use the appropriate SQL commands or HANA Studio options to change the master node configuration.
  
  
  
  Review Documentation:
  
  Consult the SAP HANA documentation for specific commands and procedures related to node management and master node configuration.
  
  
  
  Restart Services:
  
  In some cases, restarting the HANA services may help to clear any temporary misconfigurations or states.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They can provide more detailed insights based on your specific system configuration.
  
  
  
  Related Information:
  
  SAP HANA Administration Guide: This guide provides detailed instructions on managing nodes, including how to configure master and worker nodes.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches and updates that could resolve the issue.
  HANA System Replication: If you are working with system replication, ensure that the replication setup is correctly configured, as this can also affect node assignments.
  
  By following these steps, you should be able to resolve the ESH_HANA_ADMIN237 error and properly configure your HANA nodes.