Global Statistics Are Not Updated When Exchanging Paritions
(Doc ID 2491590.1)
Last updated on FEBRUARY 20, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Information in this document applies to any platform.
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Global statistics are not collected when exchanging partitions as describes in the documents :
2 Oracle Database 12c Release 1 (18.104.22.168) New Features
22.214.171.124 Enhancements to Incremental Statistics
Gathering statistics on partitioned tables consists of gathering statistics at both the table level and partition level. Incremental statistics allow Oracle to gather statistics only at the partition level and accurately calculate the global-level statistics from the partition-level statistics. Incremental statistics have been enhanced to support partition exchange loading. Data loaded into a non-partitioned
table can be exchanged with a partition from the table and Oracle automatically and accurate computes the global statistics for the partition table using the statistics from the non-partitioned table and the existing partition-level statistics.
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