How To Fix CNVMBT156 - Writing log to database failed


SAP Error Message - Details

  • Message type: E = Error

  • Message class: CNVMBT - Messages for MBT/API/PCL

  • Message number: 156

  • Message text: Writing log to database failed

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  • 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.



    What else can you do?

    First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

    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.

    You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.


Smart SAP Assistant

  • What is the cause and solution for SAP error message CNVMBT156 - Writing log to database failed ?

    The SAP error message CNVMBT156: Writing log to database failed typically occurs during data migration processes, particularly when using the SAP Migration Cockpit or similar tools. This error indicates that the system encountered an issue while trying to write log entries to the database, which can hinder the migration process.

    Causes:

    1. Database Issues: There may be problems with the database itself, such as:

      • Insufficient space in the database.
      • Database locks or contention issues.
      • Corruption in the database tables.
    2. Authorization Issues: The user executing the migration may not have the necessary permissions to write logs to the database.

    3. Configuration Issues: Incorrect configuration settings in the migration tool or the database connection settings.

    4. System Performance: High load on the database server or network issues that may prevent successful log writing.

    5. Temporary System Issues: Sometimes, temporary glitches in the system can lead to this error.

    Solutions:

    1. Check Database Space: Ensure that there is enough space available in the database. You can check the database size and free space using database management tools.

    2. Review Authorizations: Verify that the user has the necessary authorizations to write logs. You may need to adjust roles and permissions.

    3. Check Database Locks: Use database monitoring tools to check for any locks or contention issues that might be preventing log writing.

    4. Review Configuration: Ensure that the configuration settings for the migration tool and database connections are correct.

    5. Monitor System Performance: Check the performance of the database server and network. If the system is under heavy load, consider running the migration during off-peak hours.

    6. Check for Temporary Issues: If the error seems to be intermittent, it may be worth retrying the operation after a short period.

    7. Consult Logs: Look at the application and database logs for more detailed error messages that can provide additional context about the failure.

    8. Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.

    Related Information:

    • SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches and updates.
    • Documentation: Review the official SAP documentation for the migration tool you are using to ensure that all prerequisites and configurations are met.
    • Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.

    By following these steps, you should be able to diagnose and resolve the CNVMBT156 error effectively.

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