How To Fix CNV_MBT802 - &1 was defined automatically as the biggest existing tablespace

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 802

• Message text: &1 was defined automatically as the biggest existing tablespace

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 CNV_MBT802 - &1 was defined automatically as the biggest existing tablespace ?

  The SAP error message CNV_MBT802 typically relates to the SAP system's database management, particularly in the context of data migration or conversion processes. This error indicates that a tablespace was automatically defined as the largest existing tablespace during a migration or conversion operation. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Tablespace Configuration: The error usually arises when the system is trying to allocate a new tablespace for a database object, but it finds that the existing tablespaces are not sufficient or properly configured for the operation.
  Database Size Limitations: The existing tablespaces may have reached their size limits, or there may be restrictions on the maximum size that can be allocated.
  Migration Process: This error often occurs during data migration processes where the system attempts to optimize the allocation of resources based on existing configurations.
  
  Solution:
  
  
  Review Tablespace Configuration:
  
  Check the current configuration of your database tablespaces. Ensure that they are adequately sized and configured to handle the data being migrated or converted.
  If necessary, create additional tablespaces or resize existing ones to accommodate the data.
  
  
  
  Adjust Database Parameters:
  
  Review and adjust database parameters related to tablespace management. This may include increasing the maximum size of existing tablespaces or modifying the allocation settings.
  
  
  
  Database Administration:
  
  Consult with your database administrator to ensure that the database is optimized for the migration process. They may need to perform maintenance tasks such as reorganizing or defragmenting tablespaces.
  
  
  
  SAP Notes and Documentation:
  
  Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  Review the SAP documentation related to the specific migration or conversion process you are undertaking.
  
  
  
  Testing:
  
  If changes are made to the tablespace configuration, conduct tests to ensure that the migration or conversion process can proceed without further issues.
  
  
  
  Related Information:
  
  SAP Support: If the issue persists after attempting the above solutions, consider reaching out to SAP Support for further assistance. They can provide insights based on the specific version of SAP you are using and the context of the error.
  Database Documentation: Refer to the documentation for your specific database (e.g., Oracle, HANA, SQL Server) for best practices on managing tablespaces and handling size limitations.
  Migration Tools: If you are using specific SAP migration tools (like SAP Landscape Management or SAP Data Services), ensure that they are configured correctly and are up to date.
  
  By addressing the underlying cause of the CNV_MBT802 error and following the suggested solutions, you should be able to resolve the issue and proceed with your data migration or conversion tasks.