How To Fix DBMAN885 - The ODS change log cannot be read with aggregation

SAP Error Message - Details

• Message type: E = Error

• Message class: DBMAN - Data Manager Message Class

• Message number: 885

• Message text: The ODS change log cannot be read with aggregation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DBMAN885 - The ODS change log cannot be read with aggregation ?

  The SAP error message DBMAN885 indicates that there is an issue with reading the ODS (Operational Data Store) change log when aggregation is being performed. This error typically arises in the context of data extraction or reporting processes in SAP BW (Business Warehouse) or SAP BI (Business Intelligence).
  Cause:
  
  Change Log Issues: The change log for the ODS object may be corrupted or not properly configured. This can happen due to inconsistencies in the data model or issues during data loading.
  Aggregation Settings: The aggregation settings for the ODS may not be compatible with the current data model or the way the data is being accessed.
  Data Model Changes: If there have been recent changes to the data model, such as modifications to the ODS structure or the underlying InfoObjects, it may lead to this error.
  Locking Issues: There may be locks on the ODS change log that prevent it from being accessed during aggregation.
  
  Solution:
  
  Check Change Log Configuration: Verify the configuration of the change log for the ODS object. Ensure that it is correctly set up and that there are no inconsistencies.
  Repair the Change Log: If the change log is corrupted, you may need to repair it. This can involve reloading the data or using specific SAP tools to fix the change log.
  Review Aggregation Settings: Check the aggregation settings for the ODS and ensure they are appropriate for the data being processed. You may need to adjust these settings based on the requirements of your reporting or extraction process.
  Data Model Consistency: Ensure that the data model is consistent and that any recent changes have been properly implemented. You may need to activate the ODS object again after making changes.
  Check for Locks: Investigate if there are any locks on the ODS change log. You can use transaction codes like SM12 to check for locks and release them if necessary.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), SM12 (Display and Delete Locks), and SLG1 (Application Log) to troubleshoot the issue.
  SAP Documentation: Refer to SAP Help documentation for detailed information on ODS objects, change logs, and aggregation processes.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.