How To Fix DB02021 - Smallest no. of extents a segment can allocate < than threshold: &1 < &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 021

• Message text: Smallest no. of extents a segment can allocate < than threshold: &1 < &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB02021 - Smallest no. of extents a segment can allocate < than threshold: &1 < &2 ?

  The SAP error message DB02021 indicates that the smallest number of extents that a segment can allocate is less than a specified threshold. This typically occurs in the context of database management, particularly when dealing with segments in a database that is managed by SAP.
  Cause:
  The error message DB02021 is usually caused by one of the following reasons:
  
  Insufficient Space: The database segment does not have enough space allocated to it, which prevents it from allocating the minimum required number of extents.
  Configuration Issues: The database configuration settings may not be optimized for the current workload or data growth, leading to constraints on extent allocation.
  Database Limits: The database may have reached its limits in terms of the number of extents or the size of the segments, which can trigger this error.
  Fragmentation: High fragmentation in the database can lead to inefficient space allocation, causing the segment to be unable to allocate the required extents.
  
  Solution:
  To resolve the DB02021 error, you can take the following steps:
  
  Increase Segment Size: If possible, increase the size of the segment to allow for more extents to be allocated. This may involve altering the database configuration or the specific segment settings.
  Free Up Space: Check for any unused or obsolete data in the database and consider archiving or deleting it to free up space.
  Adjust Configuration: Review and adjust the database configuration settings to ensure they are appropriate for the current data volume and usage patterns.
  Monitor Database Growth: Implement monitoring tools to keep track of database growth and space usage, allowing for proactive management of segments and extents.
  Reorganize Segments: If fragmentation is an issue, consider reorganizing the segments to improve space allocation efficiency.
  Consult Documentation: Refer to the specific database documentation (e.g., Oracle, SQL Server, etc.) for guidelines on managing extents and segments.
  
  Related Information:
  
  Database Management: Understanding how your specific database handles segments and extents is crucial. Each database system (e.g., Oracle, SQL Server, SAP HANA) has its own methods for managing these resources.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message. SAP frequently updates its knowledge base with solutions for common issues.
  Performance Tuning: Regular performance tuning and maintenance of the database can help prevent such errors from occurring in the future.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your database administrator or SAP support for further assistance.