How To Fix SMTTOOLS146 - Check and execute drop statements for additional indexes

SAP Error Message - Details

• Message type: E = Error

• Message class: SMTTOOLS - Multi Tenancy tools

• Message number: 146

• Message text: Check and execute drop statements for additional indexes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMTTOOLS146 - Check and execute drop statements for additional indexes ?

  The SAP error message SMTTOOLS146, which states "Check and execute drop statements for additional indexes," typically occurs during the process of data migration or system conversion, particularly when using the SAP Landscape Transformation (SLT) Replication Server or during the SAP S/4HANA migration process. This error indicates that there are additional indexes in the target database that need to be dropped before proceeding with the migration or data transfer.
  Cause:
  
  Additional Indexes: The error is triggered when there are indexes in the target database that are not required or are not compatible with the data model being migrated to. These indexes may have been created manually or automatically and can interfere with the migration process.
  Data Model Changes: Changes in the data model between the source and target systems can lead to discrepancies in the expected indexes.
  Incomplete Pre-Migration Checks: If pre-migration checks did not identify these additional indexes, they can cause issues during the migration process.
  
  Solution:
  
  Identify Additional Indexes: Review the database schema in the target system to identify any additional indexes that are not needed. This can typically be done using SQL queries to list all indexes on the relevant tables.
  Execute Drop Statements: Once the unnecessary indexes are identified, execute the appropriate SQL DROP INDEX statements to remove them from the target database. Ensure that you have the necessary permissions to perform this action.
  Re-run Migration: After dropping the unnecessary indexes, re-run the migration or data transfer process to see if the error persists.
  Consult Documentation: Refer to the SAP documentation for specific guidelines on index management during migration processes, as there may be specific recommendations or tools provided by SAP for this purpose.
  Backup: Always ensure that you have a backup of your database before making structural changes like dropping indexes.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions for this error. SAP Notes often contain patches or workarounds for known issues.
  SLT Documentation: If you are using SLT, refer to the SLT documentation for best practices regarding index management during data replication.
  Database Administration: If you are not familiar with database administration tasks, consider involving a database administrator (DBA) to assist with identifying and dropping indexes safely.
  Testing: After making changes, conduct thorough testing to ensure that the application behaves as expected and that performance is not adversely affected by the removal of indexes.
  
  By following these steps, you should be able to resolve the SMTTOOLS146 error and proceed with your migration or data transfer successfully.