How To Fix /SDF/DB6139 - The number of overflow pages is low for all tables

SAP Error Message - Details

• Message type: E = Error

• Message class: /SDF/DB6 -

• Message number: 139

• Message text: The number of overflow pages is low for all tables

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SDF/DB6139 - The number of overflow pages is low for all tables ?

  The SAP error message /SDF/DB6139 The number of overflow pages is low for all tables typically indicates that the database tables are running low on overflow pages. Overflow pages are used by the database to store additional data when the main data pages are full. When the number of available overflow pages is low, it can lead to performance issues or even data storage problems.
  Cause:
  
  High Data Volume: The primary cause of this error is that the tables in the database are experiencing a high volume of data, leading to the consumption of available overflow pages.
  Table Design: Poorly designed tables or inefficient data storage practices can lead to excessive use of overflow pages.
  Database Configuration: The database may not be configured optimally to handle the data load, leading to a shortage of overflow pages.
  Fragmentation: Over time, as data is inserted, updated, or deleted, tables can become fragmented, leading to inefficient use of space and overflow pages.
  
  Solution:
  
  
  Database Maintenance:
  
  Reorganize Tables: Perform a database maintenance operation to reorganize the tables. This can help reduce fragmentation and optimize space usage.
  Update Statistics: Ensure that database statistics are up to date, which can help the database engine make better decisions about data storage and retrieval.
  
  
  
  Increase Overflow Pages:
  
  Depending on the database system in use, you may be able to increase the number of overflow pages allocated to the tables. Consult your database documentation for specific instructions.
  
  
  
  Data Archiving:
  
  Implement data archiving strategies to move older or less frequently accessed data to separate tables or databases. This can help reduce the overall size of the active tables and free up overflow pages.
  
  
  
  Table Redesign:
  
  If certain tables are consistently running low on overflow pages, consider redesigning them to optimize data storage. This may involve changing data types, normalizing data, or splitting large tables into smaller, more manageable ones.
  
  
  
  Monitor Database Usage:
  
  Regularly monitor the database for usage patterns and growth trends. This can help you anticipate when you might run into issues with overflow pages and take proactive measures.
  
  
  
  Related Information:
  
  Database Documentation: Refer to the specific database documentation (e.g., SAP HANA, Oracle, SQL Server) for detailed instructions on managing overflow pages and performing maintenance tasks.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Performance Monitoring Tools: Utilize performance monitoring tools to analyze database performance and identify potential bottlenecks related to overflow pages.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the impact of this error and improve the overall performance of your SAP system.