How To Fix TW402 - DY-DB-ACCESS-ERROR: Internal error in the DB_LEN function

SAP Error Message - Details

• Message type: E = Error

• Message class: TW - R3trans - Messages

• Message number: 402

• Message text: DY-DB-ACCESS-ERROR: Internal error in the DB_LEN function

What causes this issue?

An internal error occurred in the specified function in the library
twdbacc.

System Response

The action was terminated.

How to fix this error?

Inform SAP of this error, and the actions that led to it.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TW402 - DY-DB-ACCESS-ERROR: Internal error in the DB_LEN function ?

  The SAP error message TW402 DY-DB-ACCESS-ERROR: Internal error in the DB_LEN function typically indicates an issue related to database access, particularly when the system is trying to determine the length of a database field or record. This error can arise due to various reasons, including data inconsistencies, database corruption, or issues with the database connection.
  Possible Causes:
  
  Database Corruption: There may be corruption in the database tables or indexes that the DB_LEN function is trying to access.
  Data Inconsistencies: Inconsistent or invalid data in the database can lead to errors when the system attempts to read or process that data.
  Database Connection Issues: Problems with the connection to the database, such as network issues or configuration errors, can also trigger this error.
  SAP Kernel Issues: Bugs or issues in the SAP kernel or database interface can lead to unexpected errors.
  Insufficient Authorizations: The user or process may not have the necessary authorizations to access certain database objects.
  
  Solutions:
  
  Check Database Integrity: Use database tools to check for corruption or inconsistencies in the database. For example, you can run consistency checks or repair tools specific to your database system (e.g., DBCC CHECKDB for SQL Server).
  Review Logs: Check the SAP application logs (transaction SLG1) and database logs for any additional error messages or warnings that could provide more context about the issue.
  Update SAP Kernel: Ensure that you are using the latest version of the SAP kernel. If not, consider applying the latest patches or updates.
  Database Connection Configuration: Verify the database connection settings in the SAP system. Ensure that the database is reachable and that the connection parameters are correctly configured.
  User Authorizations: Check the authorizations of the user or process that is encountering the error. Ensure that they have the necessary permissions to access the relevant database objects.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. Provide them with detailed information about the error, including any relevant logs and the context in which the error occurs.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Database Documentation: Refer to the documentation for your specific database system (e.g., Oracle, SQL Server, HANA) for guidance on troubleshooting database access issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to diagnose and resolve the TW402 error in your SAP system.