Queries Referencing Tables Reorganized Using the DBMS_REDEFINITION Package have Changed Plans and Degraded in Performance.
Last updated on APRIL 11, 2017
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Information in this document applies to any platform.
- Some queries referencing tables reorganized using the DBMS_REDEFINITION package have changed plans and degraded in performance.
- The reorganized tables are missing histogram statistics that were present on the original table.
DBMS_REDEFINITION was used to reorganize one or more tables. Statistics were regathered on the intermediate table before finishing the reorganization, or were regathered on the redefined table immediately after the reorganization was complete.
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