How To Fix DB02028 - At least one segment has a number of extents exceeding the threshold

SAP Error Message - Details

• Message type: E = Error

• Message class: DB02 - For Oracle Component of the Database Monitor

• Message number: 028

• Message text: At least one segment has a number of extents exceeding the threshold

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB02028 - At least one segment has a number of extents exceeding the threshold ?

  The SAP error message DB02028 indicates that at least one segment in your database has exceeded the maximum number of extents allowed. This can lead to performance issues and may prevent further data from being added to that segment. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Extents: In database terminology, an extent is a contiguous block of storage space allocated for a database object. When a segment (like a table or index) grows, it may require additional extents.
  Threshold Exceeded: Each database has a limit on the number of extents a segment can have. When this limit is exceeded, the DB02028 error is triggered.
  Fragmentation: Over time, as data is inserted, updated, and deleted, segments can become fragmented, leading to inefficient use of space and potentially hitting the extent limit.
  
  Solutions:
  
  Increase the Extent Limit: If your database configuration allows it, you can increase the maximum number of extents for the affected segment. This is usually done through database administration tools or SQL commands.
  Reorganize the Segment: You can reorganize the segment to reduce fragmentation. This may involve:
  
  Rebuilding the Index: If the segment is an index, rebuilding it can help consolidate extents.
  Table Reorganization: For tables, you may need to perform a table reorganization or use a command to compact the table.
  
  
  Partitioning: If the segment is a large table, consider partitioning it. This can help manage data more efficiently and reduce the number of extents per partition.
  Data Archiving: If the segment contains historical data that is no longer needed for daily operations, consider archiving this data to reduce the size of the segment.
  Monitor and Optimize: Regularly monitor your database segments and optimize them as needed to prevent hitting extent limits in the future.
  
  Related Information:
  
  Database Documentation: Refer to your specific database documentation (e.g., Oracle, SQL Server, HANA) for details on extent limits and management.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error.
  Performance Monitoring: Use SAP's performance monitoring tools to keep an eye on database performance and segment usage.
  Backup: Always ensure you have a backup before performing any major changes to the database structure.
  
  Conclusion:
  Addressing the DB02028 error involves understanding the underlying database structure and taking appropriate actions to manage extents effectively. Regular maintenance and monitoring can help prevent this issue from occurring in the future.