How To Fix TPDA023 - Mirroring not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: TPDA - Debugger

• Message number: 023

• Message text: Mirroring not possible

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 TPDA023 - Mirroring not possible ?

  The SAP error message TPDA023, which states "Mirroring not possible," typically occurs in the context of database mirroring or when trying to set up a high-availability environment in SAP systems. This error can arise due to various reasons, including configuration issues, network problems, or database settings.
  Causes:
  
  Configuration Issues: The mirroring setup may not be correctly configured. This includes incorrect parameters in the database configuration or SAP system settings.
  Network Problems: There may be connectivity issues between the primary and secondary database servers, preventing them from communicating effectively.
  Database Settings: The database itself may not support mirroring, or certain required features may not be enabled.
  Resource Limitations: Insufficient resources (CPU, memory, disk space) on either the primary or secondary server can lead to mirroring failures.
  Version Compatibility: The versions of the database and SAP system may not be compatible with mirroring features.
  
  Solutions:
  
  Check Configuration: Review the mirroring configuration settings in both the SAP system and the database. Ensure that all parameters are set correctly.
  Network Connectivity: Verify that there is proper network connectivity between the primary and secondary servers. Check firewalls, routing, and any network policies that may block communication.
  Database Features: Ensure that the database supports mirroring and that all necessary features are enabled. Consult the database documentation for specific requirements.
  Resource Allocation: Monitor the resource usage on both servers. If resources are low, consider upgrading hardware or optimizing the current setup.
  Logs and Traces: Check the SAP and database logs for any additional error messages or warnings that could provide more context about the issue.
  Consult Documentation: Refer to the official SAP documentation and the database vendor's documentation for specific guidelines on setting up and troubleshooting mirroring.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches and updates.
  
  Related Information:
  
  SAP Basis Team: Involve your SAP Basis team, as they are typically responsible for system configurations and can assist in troubleshooting.
  Database Administrator (DBA): Collaborate with your DBA to ensure that the database settings are correct and that the environment is properly configured for mirroring.
  SAP Community: Consider reaching out to the SAP Community forums for additional insights and experiences from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to escalate the issue to SAP support for further assistance.