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Partitioned Table Incremental Statistics Gathering Scans Entire Table Instead of Relevant Partitions (Doc ID 1541543.1)

Last updated on APRIL 07, 2020

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.


Incremental Stats Gathering performs "FULL TABLE SCAN" instead of only relevant or specified partitions.

As per documentation:
If the INCREMENTAL value for a partition table is set to TRUE, and GRANULARITY set to AUTO, and PUBLISH set to TRUE, and AUTO_SAMPLE_SIZE set to AUTO, Oracle will gather statistics and updates the global table statistics by scanning only those partitions and not the entire table.

But it performs a FULL TABLE SCAN as seen in EXPLAIN PLAN.




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