How To Fix SMMSS_DDIC028 - MSSQL: Arithmetic overflow error when calculating the field lengths

SAP Error Message - Details

• Message type: E = Error

• Message class: SMMSS_DDIC - DDIC Messages for Microsoft SQL Server

• Message number: 028

• Message text: MSSQL: Arithmetic overflow error when calculating the field lengths

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMMSS_DDIC028 - MSSQL: Arithmetic overflow error when calculating the field lengths ?

  The SAP error message SMMSS_DDIC028 indicates that there is an arithmetic overflow error occurring when calculating field lengths in a Microsoft SQL Server (MSSQL) database. This error typically arises when the system attempts to perform a calculation that results in a value exceeding the maximum limit for a data type, such as an integer or numeric type.
  Causes:
  
  
  Data Type Limitations: The error often occurs when the sum of field lengths exceeds the maximum allowable size for a data type in SQL Server. For example, if you are trying to define a table with a total field length that exceeds the maximum row size (8,060 bytes for a single row in SQL Server).
  
  
  Incorrect Data Model: The data model may have been designed in a way that leads to excessive field lengths, such as having too many large VARCHAR or NVARCHAR fields.
  
  
  Database Configuration: There may be issues with the database configuration or settings that are causing the calculations to fail.
  
  
  Data Migration Issues: If you are migrating data from another system or upgrading your SAP system, there may be inconsistencies in the data types or lengths defined in the database.
  
  
  Solutions:
  
  
  Review Field Lengths: Check the definitions of the fields in the database schema. Ensure that the total length of the fields does not exceed the maximum row size. You may need to reduce the size of some fields or change their data types.
  
  
  Optimize Data Model: Consider optimizing the data model by:
  
  Reducing the number of large fields.
  Using more efficient data types (e.g., using VARCHAR instead of NVARCHAR if Unicode support is not required).
  Normalizing the database to reduce redundancy.
  
  
  
  Database Settings: Review the database settings and configurations to ensure they are appropriate for your SAP application.
  
  
  Check for Updates: Ensure that your SAP system and database are up to date with the latest patches and updates, as this may resolve known issues.
  
  
  Consult SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP Notes often provide guidance on how to resolve specific issues.
  
  
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They may provide specific guidance based on your system configuration and the context of the error.
  
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for guidance on database design and best practices.
  SQL Server Documentation: Familiarize yourself with SQL Server's data types and their limitations to avoid similar issues in the future.
  Performance Monitoring: Monitor the performance of your database and application to identify potential bottlenecks or issues that may lead to similar errors.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the arithmetic overflow error in your SAP system.