Handling statistics for a column with ever increasing or decreasing values... (Doc ID 877645.1)

Last updated on FEBRUARY 03, 2017

Applies to:

Oracle Server - Enterprise Edition - Version: 10.1.0.2 to 11.1.0.7 - Release: 10.1 to 11.1
Information in this document applies to any platform.

Symptoms

Bad sql plans are being intermittently chosen, depending on the bind variables passed or peeked.  When a bad plan is traced, it does appear to be lower cost in the 10053.  The culprit is a column in the where clause with a bind that contains a value that is outside of the known range of values in the statistics.

Changes

Data is inserted frequently outside of the max/min value of the statistics and that same new data is frequently queried before regathering of statistics on the table.

Cause

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