Database Administration & Monitoring Histograms on character strings between 11.2.0.3 and 11.2.0.4 30.11.2016 by Oracle Team By Franck Pachot . In short, when have statistics gathered in 11.2.0.3 but the query is now running with the 11.2.0.4 optimizer, you may have wrong cardinality estimation on histograms, leading to sub-optimal plans.
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