How To Fix DB11028 - At least one segment has a number of extents exceeding the threshold

SAP Error Message - Details

• Message type: E = Error

• Message class: DB11 - Oracle Monitor: messages

• Message number: 028

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

What causes this issue?

At least one segment has a number of allocated extents that exceeds the
threshold specified for this node.

How to fix this error?

Start the analysis tool by double-clicking on the current node in the
monitoring tree. This will display a list of all segments that have
more extents allocated than specified by the threshold, as well as the
number of extents each of these segment has.
To reduce the number of allocated extents for a segment, reorganize the
segment using SAPDBA.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DB11028 - At least one segment has a number of extents exceeding the threshold ?

  The SAP error message DB11028 indicates that at least one database segment has exceeded the maximum number of extents allowed. This typically occurs in database systems like Oracle or DB2, where segments (tables, indexes, etc.) are stored in extents, which are contiguous blocks of storage.
  Cause:
  
  Exceeding Extent Limit: Each segment in the database has a limit on the number of extents it can have. When a segment grows and exceeds this limit, the 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.
  Insufficient Space Allocation: If the initial allocation of space for a segment is too small, it may quickly run out of extents as data grows.
  
  Solution:
  
  Increase the Extent Limit: Depending on the database system, you may be able to increase the maximum number of extents allowed for the segment. This can often be done by altering the segment's storage parameters.
  Reorganize the Segment: Rebuilding or reorganizing the segment can help reduce fragmentation and consolidate extents. This can be done using commands specific to the database system (e.g., ALTER TABLE ... MOVE in Oracle).
  Increase Initial and Next Extent Sizes: Adjust the initial and next extent sizes for the segment to allow for larger growth before hitting the extent limit.
  Monitor and Manage Growth: Implement monitoring to keep track of segment growth and take proactive measures before reaching the extent limit.
  Database Maintenance: Regularly perform database maintenance tasks such as analyzing tables, updating statistics, and cleaning up unused space.
  
  Related Information:
  
  Database Documentation: Refer to the specific database documentation (e.g., Oracle, DB2) for detailed instructions on managing extents and segments.
  SAP Notes: Check SAP Notes for any specific recommendations or patches related to this error message.
  Performance Tuning: Consider performance tuning of the database to optimize space usage and reduce fragmentation.
  Backup and Recovery: Always ensure that you have a backup before making significant changes to the database structure.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with a database administrator or SAP support for further assistance.