How To Fix RSDA_SYB190 - Table "&1": &2 partitions to be dropped and &3 partitions to be merged

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDA_SYB - Messages for near-line implementation for Sybase IQ

• Message number: 190

• Message text: Table "&1": &2 partitions to be dropped and &3 partitions to be merged

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDA_SYB190 - Table "&1": &2 partitions to be dropped and &3 partitions to be merged ?

  The SAP error message RSDA_SYB190 typically relates to issues with the Data Warehouse (DWH) or the DataStore Objects (DSOs) in SAP BW (Business Warehouse) when working with Sybase databases. This error indicates that there are partitions in a specific table that need to be dropped or merged, which can occur during data loading or data management processes.
  Cause:
  
  
  Partition Management: The error suggests that the system has detected a need to drop certain partitions and merge others. This can happen due to:
  
  Changes in the data model or structure.
  Data load processes that result in an imbalance in partition sizes.
  Manual adjustments or configurations that affect how data is partitioned.
  
  
  
  Data Consistency Issues: If the data in the partitions is inconsistent or if there are discrepancies in the expected data structure, the system may require adjustments to the partitions.
  
  
  Performance Optimization: Over time, as data is loaded and processed, the performance of queries can degrade if partitions are not managed properly. The system may suggest dropping or merging partitions to optimize performance.
  
  
  Solution:
  
  
  Review Partitioning Strategy: Check the partitioning strategy for the table in question. Ensure that it aligns with the data load patterns and the expected data volume.
  
  
  Execute Partition Management:
  
  Use the appropriate transaction or program in SAP BW to manage partitions. This may involve:
  
  Dropping the specified partitions that are no longer needed.
  Merging partitions that are too small or fragmented.
  
  
  You can typically do this through the Data Warehousing Workbench or specific administrative transactions.
  
  
  
  Data Load Process: If the error occurs during a data load, review the data load process to ensure that it is configured correctly. Check for any errors in the data that might be causing the partitioning issues.
  
  
  Monitor and Adjust: After making changes, monitor the performance and behavior of the data model. Adjust the partitioning strategy as necessary based on ongoing data loads and query performance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  Documentation: Refer to SAP BW documentation for best practices on partition management and data loading.
  Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves complex data models or significant data volumes.
  
  By addressing the underlying causes and following the recommended solutions, you should be able to resolve the RSDA_SYB190 error and ensure that your data partitions are managed effectively.