How To Fix SADA020 - Error reading SQL optimizer statistics logs

SAP Error Message - Details

• Message type: E = Error

• Message class: SADA - CCMS: SAP DB Porting and Development

• Message number: 020

• Message text: Error reading SQL optimizer statistics logs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADA020 - Error reading SQL optimizer statistics logs ?

  The SAP error message SADA020 indicates that there is an issue with reading SQL optimizer statistics logs. This error can occur in various scenarios, particularly when the system is trying to access or process SQL optimizer statistics that are either missing, corrupted, or not properly configured.
  Causes of SADA020 Error
  
  Missing Statistics: The SQL optimizer statistics may not have been generated or are missing for the database objects being accessed.
  Corrupted Statistics: The statistics files may be corrupted, leading to read errors.
  Database Configuration Issues: There may be issues with the database configuration that prevent the optimizer from accessing the statistics.
  Permissions Issues: The user or process attempting to read the statistics may not have the necessary permissions.
  Database Connectivity Issues: Problems with the connection to the database can also lead to this error.
  
  Solutions
  
  
  Generate Missing Statistics:
  
  Use the appropriate database commands to generate or update the statistics for the affected tables or indexes. For example, in Oracle, you might use the DBMS_STATS.GATHER_TABLE_STATS procedure.
  
  
  
  Check for Corruption:
  
  Verify the integrity of the statistics files. If they are corrupted, you may need to regenerate them or restore them from a backup.
  
  
  
  Review Database Configuration:
  
  Ensure that the database is properly configured to allow access to the optimizer statistics. Check the database parameters related to statistics collection.
  
  
  
  Check Permissions:
  
  Ensure that the user or process has the necessary permissions to read the statistics. This may involve checking user roles and privileges in the database.
  
  
  
  Database Connectivity:
  
  Check the database connection settings in SAP. Ensure that the connection is stable and that there are no network issues affecting access to the database.
  
  
  
  Consult Database Logs:
  
  Review the database logs for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  SAP Notes and Support:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve the issue.
  
  
  
  Related Information
  
  Database Documentation: Refer to the documentation for your specific database (e.g., Oracle, SQL Server, HANA) for details on managing and generating optimizer statistics.
  SAP Basis Team: If you are unable to resolve the issue, consider reaching out to your SAP Basis team or database administrator for assistance.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the SADA020 error effectively.