How To Fix S1377 - Not exactly the same DB instances are running

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 377

• Message text: Not exactly the same DB instances are running

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 S1377 - Not exactly the same DB instances are running ?

  The SAP error message S1377, which states "Not exactly the same DB instances are running," typically occurs in a system landscape where multiple instances of the same database are expected to be synchronized or identical, such as in a high-availability setup or a distributed system.
  Cause:
  
  Database Version Mismatch: The database instances may be running different versions or patches, leading to inconsistencies.
  Configuration Differences: There may be differences in the configuration settings of the database instances, such as parameters or options that are not aligned.
  Data Inconsistencies: The data in the database instances may not be synchronized, which can happen if one instance has been updated while another has not.
  Network Issues: Connectivity problems between the database instances can lead to discrepancies in the expected state of the instances.
  Instance Failures: If one of the database instances has failed or is not operational, it can trigger this error.
  
  Solution:
  
  Check Database Versions: Ensure that all database instances are running the same version and patch level. If not, upgrade or patch the instances to match.
  Review Configuration Settings: Compare the configuration settings of the database instances to ensure they are identical. This includes checking parameters in the database configuration files.
  Synchronize Data: If there are data inconsistencies, you may need to perform a data synchronization process to ensure that all instances have the same data.
  Network Troubleshooting: Check the network connectivity between the database instances. Ensure that there are no firewalls or network issues preventing communication.
  Check Instance Status: Verify that all database instances are up and running. If one instance is down, troubleshoot and resolve the issue to bring it back online.
  Consult SAP Notes: Look for relevant SAP Notes or documentation that may provide specific guidance or patches related to this error.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for your specific database and SAP version for detailed troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and information about your system landscape.
  
  By following these steps, you should be able to identify and resolve the cause of the S1377 error in your SAP environment.